Looking at the definition of OWL 2 property chains in owlrl.spin.rdf:
# prp-spo2-2
CONSTRUCT {
?u1 ?p ?u3 .
}
WHERE {
?p owl:propertyChainAxiom ?x .
?x list:length 2 .
?x list:index ( 0 ?p1 ) .
?x list:index ( 1 ?p2 ) .
?u1 ?p1 ?u2 .
?u2 ?p2 ?u3 .
}
it seems that any property chain axiom containing more than two
properties is not supported. Am I reading this correctly and if so,
are there plans to extend it in future?
Regards,
Gerrit
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