I can overcome this hindrance by adding:
    MINUS {
        ?r a owl:ObjectProperty .
    }

But I wonder if it is a normal behaviour of the inference engine? What I 
should take into account in the future?

вторник, 3 мая 2016 г., 12:04:42 UTC+3 пользователь [email protected] 
написал:
>
> Hello
> I use TopBraid Free Edition. I try to create a new property with the help 
> of CONSTRUCT rule. The property should have a propertyChainAxiom. I use the 
> following test rule:
> CONSTRUCT {
>     ?r a owl:ObjectProperty .
>     ?r owl:propertyChainAxiom _:b0 .
>     _:b0 rdf:first rdf:nil .
> }
> WHERE {
>     BIND (IRI("abc") AS ?r) .
> }
>
> I bind the rule to a class and create an instance of this class. Then I 
> start inference process. And it goes into infinite loop. What did I make 
> wrong?
> Thanks in advance!
>

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