@prefix iop: <https://w3id.org/iadopt/ont/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix ex: <http://example.org/iadopt/challenge/> .
@prefix sosa: <http://www.w3.org/ns/sosa/> .
@prefix uom: <http://www.ontology-of-units-of-measure.org/resource/om-2/> .
@prefix iopp: <https://w3id.org/iadopt/pattern/> .
@prefix patt: <http://example.org/iadopt/pattern> .

ex:C15
    a 
        iop:Variable ;
    rdfs:label 
        "Foraminifera, planktic, size" ;
    rdfs:comment 
        """Size of planktic foraminifers in surface sediments, see https://doi.pangaea.de/10.1594/PANGAEA.126730""" ;
    ex:issue "https://github.com/mabablue/I-ADOPT-examples-playground/issues/21" ;
    iop:hasObjectOfInterest 
        <http://purl.jp/bio/4/id/200906037915220948> ;
    iop:hasMatrix 
        <https://www.wikidata.org/entity/Q180184> ;
    iop:hasProperty 
        <https://www.wikidata.org/entity/Q322481> ;
    iop:hasConstraint 
        [ a iop:Constraint ;
             rdfs:label "part: surface" ;
             iop:constrains <https://www.wikidata.org/entity/Q180184> ;
        ] .

<http://purl.jp/bio/4/id/200906037915220948>
    a 
        iop:Entity ;
    rdfs:label 
        "planctonic foraminifera" .

<https://www.wikidata.org/entity/Q180184>
    a 
        iop:Entity ;
    rdfs:label 
        "sediment" .

<https://www.wikidata.org/entity/Q322481>
    a 
        iop:Property ;
    rdfs:label 
        "size" .