PREFIX bcr: <https://example.org/bdpontology/bcr/>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>

bcr:Person a rdfs:Class ;
  rdfs:comment "An entry in the repository person/patient table" .

bcr:Entry a rdfs:Class ;
  rdfs:comment "An entry in a breast cancer registry" .

bcr:id a rdf:Property ;
  rdfs:comment "The identifier of the person diagnosed with breast cancer" ;
  rdfs:range bcr:Person .

bcr:entry_date a rdf:Property ;
  rdfs:comment "The date that the person was diagnosed as having breast cancer" ;
  rdfs:range xsd:date .

bcr:age a rdf:Property ;
  rdfs:comment "The age of the person at the point of diagnosis" ;
  rdfs:range xsd:integer .