PREFIX part_of: <http://purl.obolibrary.org/obo/BFO_0000050>
PREFIX occurs_in: <http://purl.obolibrary.org/obo/BFO_0000066>
PREFIX enabled_by: <http://purl.obolibrary.org/obo/RO_0002333>
PREFIX pav: <http://purl.org/pav/>
PREFIX layout: <http://geneontology.org/lego/hint/layout/>
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX dc: <http://purl.org/dc/elements/1.1/>
PREFIX lego: <http://geneontology.org/lego/>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>

<#S1> @<#S2> AND {
  (  part_of: .
   | occurs_in: .
   | enabled_by: .
  )+
}

<#S2> EXTRA a {
  part_of: @<#S2> ? ;
  occurs_in: @<#S2> ? ;
  enabled_by: @<#S2> ? ;
  pav:providedBy xsd:string ;
  ( layout:x xsd:string  ;
    layout:y xsd:string )?;
  a IRI AND NOT [owl:NamedIndividual];
  a owl:NamedIndividual ? ;
  dc:contributor xsd:string + ; # !! IRI
  dc:date xsd:string ; # !! xsd:date
  owl:annotatedTarget {
    lego:evidence @<#contribution> ;
    owl:annotatedProperty .
  }*
}

<#contribution> {
  pav:providedBy  xsd:string ; # !! IRI
  a  [owl:NamedIndividual] ;
  a  @<#flavor> ;
  dc:contributor  xsd:string ; # !! IRI
  dc:date  xsd:string ; # !! xsd:date
  dc:source  xsd:string # ?? IRI, i.e. is "PMID:30057120" a qname?
}

<#flavor> [
  part_of:
  occurs_in:
  enabled_by:
]