- rdf_global_object(+Object, :GlobalObject) is semidet
- rdf_global_object(-Object, :GlobalObject) is semidet
- Same as rdf_global_id/2, but intended for dealing with the
object part of a triple, in particular the type for typed
literals. Note that the predicate is a meta-predicate on the
output argument. This is necessary to get the module context
while the first argument may be of the form (:)/2.