| :Photo1 foaf:depicts :MyDog.
  :MyDog a cyc:Dog,  Petshops:Dog;
   cyc:skinColor  colors:brown;
   cyc:Breed Petshops:Labrador.
               ---//---
 From the above ( which cam be easily created in RDF from various markup
 tools floating around - cf http://owl.mindswap.org/images/ ) I
 postulate a tool should be able to abduce some useful information not
 just about MyDog, but about how cyc and petshops definitions of ''dog''
 are related -- note also that this would work if Petshops used some
 other URIref than ''Dog'' -- canine, celeb, perro, etc...  There are
 several people ( perhaps you folks included ) working on mapping
 database schemas/instances to each other and using that for
 integration, but most of the ones I know map multiple databases to a
 single ontology ( or a set of disaparate, but unlinked ones ) , what I
 haven't seen is a lot that is looking at instances like the above
 which bring together info from multiple ontologies in interesting
 ways
 -JH

some-ns1 some-item1 stands in the relation some-ns2 some-relation to some-ns3 some-item2
that-ns1 that-item1 stands in the relation that-ns2 that-relation to some-ns4 that-item2
the name that-ns3 precedes the name that-ns4 lexically
------------------------------------------------------------------------------------------
the namespaces that-ns3 and that-ns4 have both been used to talk about that-ns1 that-item1


the namespaces some-ns3 and some-ns4 have both been used to talk about some-ns1 some-item1
that-ns1 that-item1 has an attribute some-ns2 some-attr with value some-ns3 some-value1
-----------------------------------------------------------------------------------------
the attribute that-ns2 that-attr may have an inter-namespace value that-ns3 that-value1


this-ns1 this-item1 stands in the relation this-ns2 this-relation to this-ns3 this-item2
=======================================================================================
      Jim  Photo1                              foaf  depicts              Jim  MyDog
      Jim  MyDog                                cyc  is-a                 cyc  Dog
      Jim  MyDog                                cyc  is-a            Petshops  Dog


Jim MyDog has an attribute this-ns2 this-attr with value this-ns3 this-value
==============================================================================
                                cyc  skinColor              colors  brown
                                cyc  Breed                Petshops  Labrador


this-ns1 this-item has an attribute this-ns2 this-attr with value this-ns3 this-value
=====================================================================================

some-ns1 is less than some-ns2
-------------------------------------------------------
the name that-ns1 precedes the name that-ns2 lexically