Relation pm#part_in_Dolce_Lite (entity,entity)
  supertype:  part
  subtype:  part (entity,entity)  the subpart may or may not be different from the whole
     subtype:  component (entity,entity)
     subtype:  atomic_part (entity,atom)  an undivisible part
        subtype:  temporary_atomic_part__AtP (entity,atom)
  subtype:  proper_part (entity,entity)  the subpart is different from the whole
  subtype:  temporary_proper_part (endurant,endurant)
  subtype:  temporary_part__temporarypart (endurant,endurant)
     subtype:  temporary_component__temporarycomponent (endurant,endurant)
  subtype:  constant_part (entity,entity)
  subtype:  sibling_part__siblingpart (entity,entity)