Relation pm#object_relation (?,?)
  exclusion:  attributive_relation  mereological_relation  intentional_relation  temporal_relation
  supertype:  relation_playing_a_special_role  this type permits to categorize relations according to their roles ; this is a traditional but quite subjective way of categorizing relations
  subtype:  object__patient___theme__theme (situation,?)
     subtype:  input (process,?)
        subtype:  material (process,?)
        subtype:  parameter (process,?)
     subtype:  input_output__inputoutput (process,?)
        subtype:  modified_object (process,?)
           subtype:  muted_object__mutedobject (process,?)
        subtype:  deleted_object__deletedobject (process,?)
     subtype:  patient (process,?)  the 2nd argument may be moved, said, experienced, etc; the direct objects in 'The cat swallowed the canary' and 'Billy likes the beer' would be examples of patients; the patient of a process may or may not undergo structural change as a result of the process
        subtype:  instrument (process,object)  the 2nd argument is used in bringing about the first and is not changed by it, e.g., the key is an instrument in 'the key opened the door'; instrument and resource cannot be satisfied by the same ordered pair
        subtype:  resource (process,object)  the object is present at the beginning of the process, is used by it, and as a consequence is changed by it; for example, soap is a resource in 'the gun was carved out of soap'; resource differs from instrument in that its internal or physical properties are altered in some way by the process
        subtype:  result (process,?)  the 2nd argument is the product of the process, e.g., house is a result in 'Eric built a house'
  subtype:  domain_object (domain,?)
     subtype:  core_domain_object__central_object_of_domain (domain,?)