@prefix rdf:	<http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix ns1:	<http://aims.fao.org/aos/agrontology#> .
@prefix owl:	<http://www.w3.org/2002/07/owl#> .
ns1:isSourceOf	rdf:type	owl:ObjectProperty .
@prefix rdfs:	<http://www.w3.org/2000/01/rdf-schema#> .
@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
ns1:isSourceOf	rdfs:subPropertyOf	skos:related ;
	owl:inverseOf	ns1:isDerivedFrom ;
	rdfs:label	"Is source of"@en ;
	rdfs:comment	"Y <isSourceOf> X. A source Y from which a substance or product X can be exclusively obtained, without any additional substance or product. E.g. \"cow\" <isSourceOf> \"cow milk\"; \"plant\" <isSourceOf> \"plant oil\"; \"olive tree\" <isSourceOf> \"olive wood\"; \"chicken\" <isSourceOf> \"chicken meat\"; but NOT \"hops\" <isSourceOf> \"beer\" (see <usedToMake>);"@en .