<!-- catalogue-items.dtd
     Document Type Definition for Exhibition Catalogue Items XML
     Aligned with the Item-in-Exhibition Data Model (data-models/item-in-exhibition.csv)
     and Wikidata / CIDOC CRM property set.

     Based on the Baldessari at Sprengel Museum Hannover catalogue (scan-2).

     Required fields : title, creator
     Optional fields : all others (empty elements permitted)
-->

<!ELEMENT catalogue (meta, items)>

<!-- Catalogue-level metadata -->
<!ELEMENT meta (
  exhibition_title,
  venue,
  venue_qid,
  creator_name,
  creator_qid,
  source_file
)>

<!ELEMENT exhibition_title (#PCDATA)>
<!ELEMENT venue            (#PCDATA)>
<!-- Wikidata Q-identifier for the venue -->
<!ELEMENT venue_qid        (#PCDATA)>
<!-- Primary artist / creator name -->
<!ELEMENT creator_name     (#PCDATA)>
<!-- Wikidata Q-identifier for the primary creator -->
<!ELEMENT creator_qid      (#PCDATA)>
<!-- Filename of the source OCR catalogue -->
<!ELEMENT source_file      (#PCDATA)>

<!-- Item list -->
<!ELEMENT items (item+)>

<!ELEMENT item (
  title,
  creator,
  creator_qid,
  date,
  object_type,
  object_type_qid,
  materials,
  materials_qids,
  dimensions,
  inventory_number,
  catalog_number,
  location,
  exhibited_at,
  exhibited_at_qid,
  notes
)>

<!-- Artwork / object title (Wikidata P1476 / CIDOC P102_has_title) -->
<!ELEMENT title            (#PCDATA)>

<!-- Creator / artist name (Wikidata P170 / CIDOC P14_carried_out_by) -->
<!ELEMENT creator          (#PCDATA)>

<!-- Wikidata Q-identifier for the creator -->
<!ELEMENT creator_qid      (#PCDATA)>

<!-- Date or date range of creation (Wikidata P571 / CIDOC P108_has_produced) -->
<!ELEMENT date             (#PCDATA)>

<!-- Object / artwork type label (Wikidata P31) -->
<!ELEMENT object_type      (#PCDATA)>

<!-- Wikidata Q-identifier for the object type -->
<!ELEMENT object_type_qid  (#PCDATA)>

<!-- Semicolon-separated list of materials (Wikidata P186 / CIDOC P45_consists_of) -->
<!ELEMENT materials        (#PCDATA)>

<!-- Semicolon-separated Wikidata Q-identifiers for materials -->
<!ELEMENT materials_qids   (#PCDATA)>

<!-- Physical dimensions container (Wikidata P2048/P2049/P2610 / CIDOC P43_has_dimension) -->
<!ELEMENT dimensions (height_cm, width_cm, depth_cm)>
<!ELEMENT height_cm        (#PCDATA)>
<!ELEMENT width_cm         (#PCDATA)>
<!ELEMENT depth_cm         (#PCDATA)>

<!-- Museum inventory number (Wikidata P217 / CIDOC P1_is_identified_by E42) -->
<!ELEMENT inventory_number (#PCDATA)>

<!-- Exhibition / catalogue number (Wikidata P528 / CIDOC P1_is_identified_by E42) -->
<!ELEMENT catalog_number   (#PCDATA)>

<!-- Current or catalogue location label (Wikidata P276) -->
<!ELEMENT location         (#PCDATA)>

<!-- Venue where the item was exhibited (Wikidata P1431 / CIDOC E7_Activity) -->
<!ELEMENT exhibited_at     (#PCDATA)>

<!-- Wikidata Q-identifier for the exhibition venue -->
<!ELEMENT exhibited_at_qid (#PCDATA)>

<!-- Free-text notes, including collection ownership statements -->
<!ELEMENT notes            (#PCDATA)>