[Pellet-users] How Can I make pellet negation?

[Giantonio Chiarelli]

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How Can I make pellet negation on a Concepts and not on a data type
property in a rules?

Example:

Black(X) :- Person(X), hasHair(X, Y), Color(Y), Y = 'black';
Blond(X) :- Person(X), not Black(X)

Also does pellet support rules expressed in Prolog (not in SWRL) ?

Thanks... 	
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