Groups - Event "LegalRuleML - TC meeting (Conference Call)" added

* Establish a versioning system for a library of xml examples
* Namespace issue for the LegalRuleML outcomes and relationship with RuleML (proposal: to duplicate the tags)
* Deliberation of the 2.1.1defeasibility.006.doc, consolidated version including the last TC amendments
* Discussion of the Tara RDF model on isomorphism
* Presentation and discussion of the  2.8isomorphism 002 003.doc from Adrian