18 lines
537 B
SPARQL
18 lines
537 B
SPARQL
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PREFIX vivo: <http://vivoweb.org/ontology/core#>
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PREFIX owl: <http://www.w3.org/2002/07/owl#Thing>
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PREFIX foaf: <http://xmlns.com/foaf/0.1/>
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CONSTRUCT {
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?person1 vivo:relatedBy _:relationship .
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?person2 vivo:relatedBy _:relationship .
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_:relationship vivo:relates ?person1 .
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_:relationship vivo:relates ?person2 .
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} WHERE {
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{ ?person1 vivo:hasCollaborator ?person2
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FILTER NOT EXISTS {
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?person1 vivo:relatedBy ?relationship .
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?relationship vivo:relates ?person2
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}
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}
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}
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