Hey Chris - I can't find the definition of the relation 'located_in' anywhere (it's used in the cc-xp-self file) - could you point me to it? cheers, Jane -- Dr Jane Lomax GO Editorial Office EMBL-EBI Wellcome Trust Genome Campus Hinxton Cambridgeshire, UK CB10 1SD p: +44 1223 492516 f: +44 1223 494468