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This question is related to this: OWL and DL Reasoning: Why is Eros not beautiful?

I am trying to create an ontology with these features:

  1. Every person is happy if all his children are successful.

  2. Aphrodite is a parent of Eros.

  3. Eros is successful.

And here is what I have for Happy:

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I expect Aphrodite not to be Happy, because of the Open World Assumption (she may have another child later), but what about Eros? He has no children, shouldn't he be happy?

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gsamaras
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  • Thanks @Link. I now have a new question http://stackoverflow.com/questions/35687045/x-doesn-t-like-anything-that-y-likes if you have time. – gsamaras Feb 28 '16 at 19:26

1 Answers1

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We do not know if Eros has any children either, same assumption you used for Aphrodite. Hence Eros cannot be happy either.

Rivasa
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