in occupy/definitions/occupy_def.clif I changed the import
(cl-domain region (cl-imports http://colore.oor.net/mereology/mereology_def.clif))
to
(cl-domain region (cl-imports http://colore.oor.net/mereology/definitions/ppart.clif))
because no file mereology_def exists and only the ppart relation from the mereology is used.
in occupy/definitions/occupy_def.clif I changed the import
(cl-domain region (cl-imports http://colore.oor.net/mereology/mereology_def.clif))
to
(cl-domain region (cl-imports http://colore.oor.net/mereology/definitions/ppart.clif))
because no file mereology_def exists and only the ppart relation from the mereology is used.