Minor: file deleted
ObjectUnionOf Added

Author: Felipe do Couto Farias <fcf4@cin.ufpe.br>
ObjectIntersectionOf supports N classes

Author: Felipe do Couto Farias <fcf4@cin.ufpe.br>
Minor: typo fix
Removing ambiguity from SubClassOf

Autor: Felipe do Couto Farias <fcf4@cin.ufpe.br>