AtomGraph · namedgraph · Jul 22, 2026 · Jul 22, 2026 · Jul 22, 2026
diff --git a/README.md b/README.md
@@ -25,7 +25,7 @@ savaime — užtenka, kad jie naudotų tuos pačius URI.
 graph LR
     person(["persons/7194/#this"]) -->|foaf:name| name["Algirdas Butkevičius"]
     membership(["…/#membership-1322-…"]) -->|org:member| person
-    membership -->|org:organization| faction(["org-units/1322/#this"])
+    membership -->|org:organization| faction(["…/seimas/org-units/1322/#this"])
     membership -->|org:memberDuring| interval["time:Interval<br/>nuo 2024-11-14"]
     faction -->|skos:prefLabel| fname["Demokratų frakcija<br/>„Vardan Lietuvos“"]
     faction -->|org:unitOf| seimas(["organizations/<br/>lietuvos-respublikos-seimas/#this"])

diff --git a/app/organizations/lietuvos-respublikos-seimas.ttl b/app/organizations/lietuvos-respublikos-seimas.ttl
@@ -0,0 +1,25 @@
+@prefix cv:   <http://data.europa.eu/m8g/> .
+@prefix dh:   <https://www.w3.org/ns/ldt/document-hierarchy#> .
+@prefix ldh:  <https://w3id.org/atomgraph/linkeddatahub#> .
+@prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix dct:  <http://purl.org/dc/terms/> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix org:  <http://www.w3.org/ns/org#> .
+@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
+
+# The Seimas organization document is a dh:Container (its structural units and
+# parliamentary groups nest under it) that is also the org entity itself —
+# same pattern as the taxonomy scheme containers (app/taxonomies/*.ttl).
+# Static data, so it lives in scaffolding rather than ETL output; the units
+# reference it via org:unitOf.
+<> a dh:Container ;
+    dct:title "Lietuvos Respublikos Seimas"@lt ;
+    foaf:primaryTopic <#this> ;
+    rdf:_1 <#select-children> .
+
+<#this> a org:FormalOrganization, cv:PublicOrganisation ;
+    skos:prefLabel "Lietuvos Respublikos Seimas"@lt, "Seimas of the Republic of Lithuania"@en ;
+    foaf:homepage <https://www.lrs.lt/> .
+
+<#select-children> a ldh:Object ;
+    rdf:value ldh:ChildrenView .
diff --git a/app/parliamentary-groups.ttl → ...ns/lietuvos-respublikos-seimas/groups.ttl b/app/parliamentary-groups.ttl → ...ns/lietuvos-respublikos-seimas/groups.ttl
diff --git a/app/org-units.ttl → ...lietuvos-respublikos-seimas/org-units.ttl b/app/org-units.ttl → ...lietuvos-respublikos-seimas/org-units.ttl
diff --git a/datasets/current/seimas/org-units.trig b/datasets/current/seimas/org-units.trig
diff --git a/datasets/current/seimas/persons.trig b/datasets/current/seimas/persons.trig
diff --git a/etl/URI-SCHEME.md b/etl/URI-SCHEME.md
@@ -18,8 +18,31 @@ the committed outputs under `datasets/current/` use the default
    scheme docs) are **not** ETL output: they are scaffolding, one Turtle
    file per container under `app/`, PUT over HTTP by `make install` via the
    LDH CLI — LDH adds `sioc:has_parent` and ownership metadata server-side.
-2. **Fold by type**: all instances of one class share one flat container.
-   Hierarchy lives in RDF (`dct:isPartOf`), never in URI paths.
+2. **Fold standalone entities by type; nest constituent parts under their
+   whole.** Independent entities of one class share one flat top-level
+   container (`persons/`, `parties/`, `organizations/`, `admin-units/`). But an
+   entity that is a *structural part* of another — an organization's units and
+   groups (`org:unitOf` / `org:hasSubOrganization`) — nests under that parent's
+   document URI, so the path mirrors the RDF composition
+   (`organizations/lietuvos-respublikos-seimas/org-units/{id}/`). This is the
+   only case URI depth encodes hierarchy; membership and other relationships
+   are *not* composition and never nest (a person is a *member* of the Seimas,
+   not a part of it, so `persons/` stays top-level). The same pattern applies
+   to any future organization with internal structure (a ministry, a court).
+   **Precondition — the parent must be fixed and derivable from the child's
+   key.** Nesting only preserves principle 3 (mint a link from a bare foreign
+   key) when every instance has the *same, well-known* parent, so `{key}` plus a
+   constant prefix yields the URI with no lookup. The Seimas qualifies: every
+   org-unit belongs to the one Seimas. Admin units do **not** — a settlement's
+   eldership (and a municipality's county) is not encoded in its AR code
+   (municipality `12` is in county `2`, `13` in county `10`; settlement `23643`
+   in eldership `1867`), so a partonomy path like
+   `admin-units/{county}/…/{gyv_kodas}/` would demand a per-entity ancestry
+   lookup and would churn under municipal reforms. Also do not encode class
+   *subsumption* in the path (`rdf:type` + `rdfs:subClassOf` already carry it,
+   and an instance's most-specific class is mutable). Such part-of and is-a
+   hierarchies stay in the RDF (`dct:isPartOf`, `rdf:type`) and the 1:N views,
+   never in the path — `admin-units/` and `streets/` are flat.
 3. **Natural keys as slugs**: official codes from the source registry, never
    name-derived strings (except parties, see below). Any pipeline can mint a
    link from a bare foreign key without looking up the target dataset.
@@ -32,9 +55,9 @@ the committed outputs under `datasets/current/` use the default
 | `admin-units/{code}/` | AR code: county `adm_kodas` (1 digit), municipality `sav_kodas` (2), eldership `sen_kodas` (4), settlement `gyv_kodas` (5) — ranges verified non-colliding | `cv:AdminUnit` | AR via get.data.gov.lt |
 | `streets/{gat_kodas}/` | AR street code (7 digits) | `dct:Location` | AR |
 | `persons/{asmens_id}/` | Seimas person id | `foaf:Person` | apps.lrs.lt |
-| `org-units/{padalinio_id}/` | Seimas structural-unit id | `org:OrganizationalUnit` | apps.lrs.lt |
-| `parliamentary-groups/{grupes_id}/` | Seimas parliamentary-group id (separate id space from `padalinio_id`) | `org:OrganizationalUnit` | apps.lrs.lt |
-| `organizations/{slug}/` | name slug (no natural key in source) | `org:FormalOrganization` | e.g. `organizations/lietuvos-respublikos-seimas/` |
+| `organizations/{slug}/` | name slug (no natural key in source) | `org:FormalOrganization` | `organizations/lietuvos-respublikos-seimas/` — a **container** (its parts nest under it, see below) that is also the org entity |
+| `organizations/lietuvos-respublikos-seimas/org-units/{padalinio_id}/` | Seimas structural-unit id | `org:OrganizationalUnit` | apps.lrs.lt (nested under the Seimas via `org:unitOf`) |
+| `organizations/lietuvos-respublikos-seimas/groups/{grupes_id}/` | Seimas parliamentary-group id (separate id space from `padalinio_id`) | `org:OrganizationalUnit` | apps.lrs.lt (nested under the Seimas) |
 | `parties/{slug}/` | transliterated party-name slug (JAR code once matched — parties keep slug for continuity, `owl:sameAs`/`dct:identifier` carry the code) | `org:FormalOrganization` | apps.lrs.lt (VRK/JAR later) |
 | `legal-entities/{ja_kodas}/` | JAR company code (9 digits) | `rov:RegisteredOrganization` | JAR via get.data.gov.lt |
 | `taxonomies/{scheme}/` | scheme slug | `skos:ConceptScheme` | — |

diff --git a/etl/queries/EXAMPLES.md b/etl/queries/EXAMPLES.md
@@ -359,12 +359,12 @@ Rezultatai:
 |---|---|---|---|
 | http://purl.org/dc/terms/Location | 61149 | 0 | 0 |
 | http://data.europa.eu/m8g/AdminUnit | 26883 | 642 | 456 |
-| http://www.w3.org/ns/org#FormalOrganization | 6037 | 0 | 0 |
+| http://www.w3.org/ns/org#FormalOrganization | 6036 | 0 | 0 |
 | http://www.w3.org/ns/regorg#RegisteredOrganization | 6025 | 0 | 0 |
 | http://www.w3.org/2004/02/skos/core#Concept | 257 | 0 | 0 |
-| http://xmlns.com/foaf/0.1/Person | 148 | 101 | 148 |
+| http://xmlns.com/foaf/0.1/Person | 148 | 100 | 148 |
 | http://www.w3.org/ns/org#OrganizationalUnit | 136 | 0 | 0 |
-| http://www.w3.org/2004/02/skos/core#ConceptScheme | 7 | 0 | 0 |
+| https://schema.org/PoliticalParty | 11 | 0 | 0 |
 
 
 ## CONSTRUCT: frakcijų seniūnų profiliai
@@ -419,32 +419,32 @@ Rezultatai:
 
 | subjektas (S) | predikatas (P) | objektas (O) |
 |---|---|---|
-| <https://linkeddata.lt/org-units/1022/#this> | <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> | <https://schema.org/Organization> |
-| <https://linkeddata.lt/org-units/1022/#this> | <https://schema.org/name> | "Tėvynės sąjungos-Lietuvos krikščionių demokratų frakcija"@lt |
-| <https://linkeddata.lt/org-units/1070/#this> | <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> | <https://schema.org/Organization> |
-| <https://linkeddata.lt/org-units/1070/#this> | <https://schema.org/name> | "Lietuvos valstiečių, žaliųjų ir Krikščioniškų šeimų sąjungos frakcija"@lt |
-| <https://linkeddata.lt/org-units/1322/#this> | <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> | <https://schema.org/Organization> |
-| <https://linkeddata.lt/org-units/1322/#this> | <https://schema.org/name> | "Demokratų frakcija „Vardan Lietuvos“"@lt |
-| <https://linkeddata.lt/org-units/1430/#this> | <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> | <https://schema.org/Organization> |
-| <https://linkeddata.lt/org-units/1430/#this> | <https://schema.org/name> | "„Nemuno aušros“ frakcija"@lt |
-| <https://linkeddata.lt/org-units/47/#this> | <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> | <https://schema.org/Organization> |
-| <https://linkeddata.lt/org-units/47/#this> | <https://schema.org/name> | "Mišri Seimo narių grupė"@lt |
-| <https://linkeddata.lt/org-units/793/#this> | <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> | <https://schema.org/Organization> |
-| <https://linkeddata.lt/org-units/793/#this> | <https://schema.org/name> | "Lietuvos socialdemokratų partijos frakcija"@lt |
-| <https://linkeddata.lt/org-units/870/#this> | <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> | <https://schema.org/Organization> |
-| <https://linkeddata.lt/org-units/870/#this> | <https://schema.org/name> | "Liberalų sąjūdžio frakcija"@lt |
+| <https://linkeddata.lt/organizations/lietuvos-respublikos-seimas/org-units/1022/#this> | <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> | <https://schema.org/Organization> |
+| <https://linkeddata.lt/organizations/lietuvos-respublikos-seimas/org-units/1022/#this> | <https://schema.org/name> | "Tėvynės sąjungos-Lietuvos krikščionių demokratų frakcija"@lt |
+| <https://linkeddata.lt/organizations/lietuvos-respublikos-seimas/org-units/1070/#this> | <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> | <https://schema.org/Organization> |
+| <https://linkeddata.lt/organizations/lietuvos-respublikos-seimas/org-units/1070/#this> | <https://schema.org/name> | "Lietuvos valstiečių, žaliųjų ir Krikščioniškų šeimų sąjungos frakcija"@lt |
+| <https://linkeddata.lt/organizations/lietuvos-respublikos-seimas/org-units/1322/#this> | <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> | <https://schema.org/Organization> |
+| <https://linkeddata.lt/organizations/lietuvos-respublikos-seimas/org-units/1322/#this> | <https://schema.org/name> | "Demokratų frakcija „Vardan Lietuvos“"@lt |
+| <https://linkeddata.lt/organizations/lietuvos-respublikos-seimas/org-units/1430/#this> | <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> | <https://schema.org/Organization> |
+| <https://linkeddata.lt/organizations/lietuvos-respublikos-seimas/org-units/1430/#this> | <https://schema.org/name> | "„Nemuno aušros“ frakcija"@lt |
+| <https://linkeddata.lt/organizations/lietuvos-respublikos-seimas/org-units/47/#this> | <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> | <https://schema.org/Organization> |
+| <https://linkeddata.lt/organizations/lietuvos-respublikos-seimas/org-units/47/#this> | <https://schema.org/name> | "Mišri Seimo narių grupė"@lt |
+| <https://linkeddata.lt/organizations/lietuvos-respublikos-seimas/org-units/793/#this> | <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> | <https://schema.org/Organization> |
+| <https://linkeddata.lt/organizations/lietuvos-respublikos-seimas/org-units/793/#this> | <https://schema.org/name> | "Lietuvos socialdemokratų partijos frakcija"@lt |
+| <https://linkeddata.lt/organizations/lietuvos-respublikos-seimas/org-units/870/#this> | <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> | <https://schema.org/Organization> |
+| <https://linkeddata.lt/organizations/lietuvos-respublikos-seimas/org-units/870/#this> | <https://schema.org/name> | "Liberalų sąjūdžio frakcija"@lt |
 | <https://linkeddata.lt/persons/12253/#this> | <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> | <https://schema.org/Person> |
 | <https://linkeddata.lt/persons/12253/#this> | <https://schema.org/image> | <https://www.lrs.lt/SIPIS/sn_foto/2024/jaroslav_narkevic.jpg> |
-| <https://linkeddata.lt/persons/12253/#this> | <https://schema.org/memberOf> | <https://linkeddata.lt/org-units/1070/#this> |
+| <https://linkeddata.lt/persons/12253/#this> | <https://schema.org/memberOf> | <https://linkeddata.lt/organizations/lietuvos-respublikos-seimas/org-units/1070/#this> |
 | <https://linkeddata.lt/persons/12253/#this> | <https://schema.org/name> | "Jaroslav Narkevič" |
 | <https://linkeddata.lt/persons/15266/#this> | <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> | <https://schema.org/Person> |
 | <https://linkeddata.lt/persons/15266/#this> | <https://schema.org/image> | <https://www.lrs.lt/SIPIS/sn_foto/2024/orinta_leipute.jpg> |
-| <https://linkeddata.lt/persons/15266/#this> | <https://schema.org/memberOf> | <https://linkeddata.lt/org-units/793/#this> |
+| <https://linkeddata.lt/persons/15266/#this> | <https://schema.org/memberOf> | <https://linkeddata.lt/organizations/lietuvos-respublikos-seimas/org-units/793/#this> |
 | <https://linkeddata.lt/persons/15266/#this> | <https://schema.org/name> | "Orinta Leiputė" |
 | <https://linkeddata.lt/persons/15266/#this> | <https://schema.org/sameAs> | <http://www.wikidata.org/entity/Q1750302> |
 | <https://linkeddata.lt/persons/64701/#this> | <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> | <https://schema.org/Person> |
 | <https://linkeddata.lt/persons/64701/#this> | <https://schema.org/image> | <https://www.lrs.lt/SIPIS/sn_foto/2024/laurynas_kasciunas.jpg> |
-| <https://linkeddata.lt/persons/64701/#this> | <https://schema.org/memberOf> | <https://linkeddata.lt/org-units/1022/#this> |
+| <https://linkeddata.lt/persons/64701/#this> | <https://schema.org/memberOf> | <https://linkeddata.lt/organizations/lietuvos-respublikos-seimas/org-units/1022/#this> |
 | <https://linkeddata.lt/persons/64701/#this> | <https://schema.org/name> | "Laurynas Kasčiūnas" |
 | <https://linkeddata.lt/persons/64701/#this> | <https://schema.org/sameAs> | <http://www.wikidata.org/entity/Q28735068> |
 | <https://linkeddata.lt/persons/65703/#this> | <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> | <https://schema.org/Person> |

diff --git a/etl/seimas/mappings/org-units.rq b/etl/seimas/mappings/org-units.rq
@@ -1,8 +1,10 @@
 # Seimas structural units (factions, committees, commissions) and parliamentary
-# groups as org:OrganizationalUnit, one per named graph; plus the Seimas itself.
-# Structural units come from the dedicated feeds; parliamentary groups are only
-# present in the members feed's position rows, so both normalized inputs are used.
-PREFIX cv:   <http://data.europa.eu/m8g/>
+# groups as org:OrganizationalUnit, one per named graph, nested under the Seimas
+# organization document (organizations/lietuvos-respublikos-seimas/). Structural
+# units come from the dedicated feeds; parliamentary groups are only present in
+# the members feed's position rows, so both normalized inputs are used. The
+# Seimas organization document itself is app/ scaffolding, not ETL output — the
+# units only reference it via org:unitOf.
 PREFIX dct:  <http://purl.org/dc/terms/>
 PREFIX foaf: <http://xmlns.com/foaf/0.1/>
 PREFIX org:  <http://www.w3.org/ns/org#>
@@ -13,16 +15,6 @@ PREFIX sioc: <http://rdfs.org/sioc/ns#>
 
 CONSTRUCT
 {
-    GRAPH ?seimasGraph
-    {
-        ?seimasGraph a dh:Item ;
-            sioc:has_container ?organizations ;
-            dct:title "Lietuvos Respublikos Seimas"@lt ;
-            foaf:primaryTopic ?seimas .
-        ?seimas a org:FormalOrganization, cv:PublicOrganisation ;
-            skos:prefLabel "Lietuvos Respublikos Seimas"@lt, "Seimas of the Republic of Lithuania"@en ;
-            foaf:homepage <https://www.lrs.lt/> .
-    }
     GRAPH ?graph
     {
         ?graph a dh:Item ;
@@ -40,23 +32,21 @@ CONSTRUCT
 }
 WHERE
 {
-    BIND(uri(concat(str($base), "organizations/")) AS ?organizations)
-    BIND(uri(concat(str(?organizations), "lietuvos-respublikos-seimas/")) AS ?seimasGraph)
-    BIND(uri(concat(str(?seimasGraph), "#this")) AS ?seimas)
+    BIND(uri(concat(str($base), "organizations/lietuvos-respublikos-seimas/#this")) AS ?seimas)
 
     {
         ?row <#padalinio_id> ?id ;
             <#pavadinimas> ?name ;
             <#tipas> ?tipas .
         OPTIONAL { ?row <#santrumpa> ?abbr }
-        BIND(uri(concat(str($base), "org-units/", encode_for_uri(?id), "/")) AS ?graph)
+        BIND(uri(concat(str($base), "organizations/lietuvos-respublikos-seimas/org-units/", encode_for_uri(?id), "/")) AS ?graph)
         BIND(?tipas AS ?typeSlug)
     }
     UNION
     {
         ?row <#parlamentines_grupes_id> ?id ;
             <#parlamentines_grupes_pavadinimas> ?name .
-        BIND(uri(concat(str($base), "parliamentary-groups/", encode_for_uri(?id), "/")) AS ?graph)
+        BIND(uri(concat(str($base), "organizations/lietuvos-respublikos-seimas/groups/", encode_for_uri(?id), "/")) AS ?graph)
         BIND("parlamentine-grupe" AS ?typeSlug)
     }
     UNION
@@ -67,7 +57,7 @@ WHERE
         ?row <#padalinio_id> ?id ;
             <#padalinio_pavadinimas> ?name .
         FILTER NOT EXISTS { ?row <#tipas> ?anyType }
-        BIND(uri(concat(str($base), "org-units/", encode_for_uri(?id), "/")) AS ?graph)
+        BIND(uri(concat(str($base), "organizations/lietuvos-respublikos-seimas/org-units/", encode_for_uri(?id), "/")) AS ?graph)
         BIND(IF(CONTAINS(lcase(?name), "komisij"), "komisija",
              IF(CONTAINS(lcase(?name), "komitet"), "komitetas",
              IF(CONTAINS(lcase(?name), "frakcij"), "frakcija",
@@ -77,7 +67,7 @@ WHERE
     BIND(STRLANG(?name, "lt") AS ?title)
     BIND(IF(BOUND(?abbr), STRLANG(?abbr, "lt"), ?undef) AS ?abbreviation)
     BIND(uri(concat(str(?graph), "#this")) AS ?unit)
-    # container = graph URI minus the slug segment (org-units/ or parliamentary-groups/)
+    # container = graph URI minus the slug segment (…/org-units/ or …/groups/)
     BIND(uri(replace(str(?graph), "[^/]+/$", "")) AS ?container)
     BIND(uri(concat(str($base), "taxonomies/org-unit-types/", ?typeSlug, "/#this")) AS ?typeConcept)
 }
diff --git a/etl/seimas/mappings/persons.rq b/etl/seimas/mappings/persons.rq
@@ -121,7 +121,7 @@ WHERE
         OPTIONAL { ?prow <#pareigos_nuo> ?mFromRaw }
         OPTIONAL { ?prow <#pareigos_iki> ?mToRaw }
     }
-    BIND(IF(BOUND(?unitId), uri(concat(str($base), "org-units/", encode_for_uri(?unitId), "/#this")), ?undef) AS ?unit)
+    BIND(IF(BOUND(?unitId), uri(concat(str($base), "organizations/lietuvos-respublikos-seimas/org-units/", encode_for_uri(?unitId), "/#this")), ?undef) AS ?unit)
     BIND(IF(BOUND(?roleSlug) && BOUND(?unitId), uri(concat(str($base), "taxonomies/position-types/", ?roleSlug, "/#this")), ?undef) AS ?role)
     BIND(IF(BOUND(?unitId), uri(concat(str(?graph), "#membership-", encode_for_uri(?unitId), "-",
         REPLACE(COALESCE(?mFromRaw, ""), "-", ""))), ?undef) AS ?membership)
@@ -139,7 +139,7 @@ WHERE
         OPTIONAL { ?grow <#pareigos_nuo> ?pgFromRaw }
         OPTIONAL { ?grow <#pareigos_iki> ?pgToRaw }
     }
-    BIND(IF(BOUND(?groupId), uri(concat(str($base), "parliamentary-groups/", encode_for_uri(?groupId), "/#this")), ?undef) AS ?pgroup)
+    BIND(IF(BOUND(?groupId), uri(concat(str($base), "organizations/lietuvos-respublikos-seimas/groups/", encode_for_uri(?groupId), "/#this")), ?undef) AS ?pgroup)
     BIND(IF(BOUND(?pgRoleSlug) && BOUND(?groupId), uri(concat(str($base), "taxonomies/position-types/", ?pgRoleSlug, "/#this")), ?undef) AS ?pgRole)
     BIND(IF(BOUND(?groupId), uri(concat(str(?graph), "#pg-membership-", encode_for_uri(?groupId), "-",
         REPLACE(COALESCE(?pgFromRaw, ""), "-", ""))), ?undef) AS ?pgMembership)