[pm#graph1_on_physical_entity
     [any pm#physical_entity (^$(no inheritance)$^),
          pm#physical_part: a pm#physical_entity,
          pm#matter: a #substance,
          pm#physical_part of: a pm#physical_entity,
          pm#location: a pm#spatial_object,
          menu#spatial_characteristic (^$(explore 1)$^): a pm#spatial_attribute_or_quality_or_measure,
          menu#physical_characteristic (^$(explore 2)$^): a menu#physical_characteristic,
          may have for pm#owner: a menu#person_or_organization (^$(explore 1)$^),
          #monetary_value: a #monetary_value,
          may be pm#object of: a pm#commercial_transaction (^$(explore 1)$^),
          may be pm#doer/object/result/place of (^$(explore)$^): a pm#situation]
];