is, &quot;x or y&quot;.

JC: One thing that worries me about making ontologies of theories relative
    to the theory is that it seems to make failure of communication
impossible
    to avoid or resolve.  If we allow only that a theory's ontological
commitments
    are specific, then they may be seen as a selection from ontology in
general,
    and theories with differing ontological commitments can be seen to
differ
    in specific ways against a background ontology.  At least the
possibility
    of seeing