http://opencaesar.io/sierra/requirement#isDerivedFrom
Property requirement:isDerivedFrom

oml:relationBase

requirement:derives

oml:type

oml:ReverseRelation

rdf:type

	owl:AsymmetricProperty
	owl:IrreflexiveProperty
	owl:ObjectProperty

rdfs:domain

requirement:Requirement

rdfs:range

requirement:Requirement

rdfs:subPropertyOf

requirement:isDerivedFrom

owl:inverseOf

requirement:derives