@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix schema: <http://schema.org/> .

<http://www.w3.org/ns/sosa/sampling/>
    a owl:Ontology ;
    owl:imports <http://www.w3.org/2004/02/skos/core>, <http://www.w3.org/ns/sosa/> .

<http://www.w3.org/ns/sosa/sampling/RelationshipNature>
    a rdfs:Class, owl:Class ;
    rdfs:label "Nature of relationship (between samples)"@en ;
    rdfs:subClassOf skos:Concept ;
    skos:definition "Members of this class indicate the nature of a relationship between two samples"@en ;
    skos:example "Adjacent flight-line", "Females", "Juveniles", "Males", "Pixel within image or scene", "Probe spot on polished specimen", "Specimen taken from borehole", "Split of core sample", "Station along a traverse", "Sub-sample with grain size smaller than specified seive mesh" .

<http://www.w3.org/ns/sosa/sampling/SampleRelationship>
    a rdfs:Class, owl:Class ;
    rdfs:label "Sample relationship"@en ;
    skos:definition "Members of this class represent a relationship between a sample and another"@en .

<http://www.w3.org/ns/sosa/sampling/hasSampleRelationship>
    schema:domainIncludes <http://www.w3.org/ns/sosa/Sample> ;
    schema:rangeIncludes <http://www.w3.org/ns/sosa/sampling/SampleRelationship> ;
    a owl:ObjectProperty ;
    rdfs:label "has sample relationship"@en ;
    skos:definition "Links a sample to a sample relationship (which links to a related sample)"@en .

<http://www.w3.org/ns/sosa/sampling/natureOfRelationship>
    schema:domainIncludes <http://www.w3.org/ns/sosa/sampling/SampleRelationship> ;
    schema:rangeIncludes <http://www.w3.org/ns/sosa/sampling/RelationshipNature> ;
    a owl:ObjectProperty ;
    rdfs:label "nature of (sample) relationship"@en ;
    skos:definition "Links a SampleRelationship to an indication of the nature of the relationship"@en .

<http://www.w3.org/ns/sosa/sampling/relatedSample>
    schema:domainIncludes <http://www.w3.org/ns/sosa/sampling/SampleRelationship> ;
    schema:rangeIncludes <http://www.w3.org/ns/sosa/Sample> ;
    a owl:ObjectProperty ;
    rdfs:label "related sample"@en ;
    skos:definition "Links a sample relationship to the related sample"@en .