First Model for the problem with ag:hasValue and ag:refersTo
-Add two Interfaces ValueOfHasValue and ValueOfRefersTo
-Add two prefix to namespaces: rdf and rdfs
The test just return the value.
-add  interface called quantitativeValueFloat
-add interface called quantitativeValueInteger
-ValueOfHasValue extends previous interfaces
Model Completed and tested
Tested mapping.
Add Mapping