Relation pm#relation_from_situation (situation,*)
  exclusion:  spatial_relation_from_entity_with_spatial_feature  relation_from_collection  relation_from_description_content/medium/container  relation_from_attribute_or_quality_or_measure
  supertype:  relation_from/to_thing_of_common_kind  this type permits to categorize relations according to their signatures and hence offers (i) a concise way to set essential exclusion relations, and (ii) a systematic and easy-to-follow categorization
  subtype:  relation_from_situation_to_time (situation,time_measure)
     subtype:  time (situation,time_measure)
        subtype:  date (situation -> time_measure)
     subtype:  duration (situation -> time_measure)
     subtype:  from_time (situation -> time_measure)
        subtype:  departure_time__departuretime (process -> time_measure)
     subtype:  until_time__untiltime__to_time (situation -> time_measure)
        subtype:  arrival_time__arrivaltime (process -> time_measure)
     subtype:  before_time (situation,time_measure)
  subtype:  relation_from_situation_to_situation (situation,situation)
     subtype:  later_situation__latersituation (situation,situation)
        subtype:  next_situation (situation -> situation)
           subtype:  successor (situation -> situation)
        subtype:  ending_situation__termination (situation -> situation)
        subtype:  postcondition (process,situation)
        subtype:  consequence (situation,situation)  see also rst#effect
     subtype:  before_situation (situation,situation)  in WebKB, do not use these relations, use their inverses
        subtype:  previous_situation (situation -> situation)
        subtype:  beginning_situation__beginningsituation (situation -> situation)
        subtype:  precondition (process,situation)
        subtype:  cause (situation,situation)  see also rst#cause
           subtype:  causes (process,process)  the process in the 1st argument brings about the process in the 2nd argument
  subtype:  case_relation__thematic_relation (situation,*)
     subtype:  doer/object/result/place (situation,?)
        subtype:  doer/object/result (situation,?)
           subtype:  agent__doer (situation [48..*],entity [49..*])
              subtype:  organizer (situation,causal_entity)
              subtype:  participant (situation,causal_entity)
              subtype:  seller__vendor___vender (situation -> goal_directed_agent)
              subtype:  customer__client___buyer__buyer___purchaser__purchaser___vendee (situation,goal_directed_agent)
              subtype:  responsible_agent__responsibleagent (situation,causal_entity)
              subtype:  agent (process,agentive_physical_object)  the 2nd argument is an active determinant, animate or inanimate, of the process
           subtype:  initiator (situation,causal_entity)
           subtype:  object/result (situation,?)
              subtype:  instrument (situation,entity)
                 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:  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:  result (situation,?)
                 subtype:  output (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:  from/to (situation,entity)
           subtype:  source (situation,causal_entity)
           subtype:  recipient (situation,entity)
              subtype:  beneficiary (situation,causal_entity)
           subtype:  from/to_place__from/toplace (process -> spatial_object)
              subtype:  from_place (process -> spatial_object)
              subtype:  to_place__destination (process -> spatial_object)
              subtype:  via_place__viaplace__via (process -> spatial_object)
              subtype:  path (process -> spatial_object)
           subtype:  origin__from (process,object)  the 2nd argument (which must be present at least at the beginning of the process) indicates where the process began; for example, the submarine is the origin in 'the missile was launched from a submarine'
           subtype:  destination__to (process,entity)  the 2nd parameter is the target or goal of the process; for example, Danbury would be the destination in 'Bob went to Danbury'; this is a very general case_role which, in particular, that it covers the concepts of 'recipient' and 'beneficiary'; thus, John would be the destination in 'Tom gave a book to John'
        subtype:  place (situation -> spatial_object)
        subtype:  path_length (process -> spatial_attribute_or_quality_or_measure)
     subtype:  experiencer (situation,causal_entity)
        subtype:  experiencer (process,agentive_physical_object)  e.g., Yojo is the experiencer of seeing in 'Yojo sees the fish'; unlike agent, this relation does not entail a causal relation between the arguments
     subtype:  relation_from_process_only (process,?)
        subtype:  goal (process,situation)
        subtype:  triggering_event (process,event)
        subtype:  ending_event (process,event)
        subtype:  precondition (process,situation)
        subtype:  postcondition (process,situation)
        subtype:  input (process,?)
        subtype:  input_output__inputoutput (process,?)
        subtype:  sub_process__subproces (process,process)
        subtype:  method (process,description)
        subtype:  from/to_place__from/toplace (process -> spatial_object)
        subtype:  process_attribute__processattribute (process,process_attribute_or_quality_or_measure)
           subtype:  manner (process,process_attribute_or_quality_or_measure)
     subtype:  participant_in_Dolce_Lite (perdurant,endurant)
        subtype:  participant__PC (perdurant,endurant)  the DOLCE predicate PC(x,y,t) means "x participates in y during t" but this relation respects the usual reading conventions: the 1st argument has for participant the 2nd
           subtype:  total_participant__totalparticipant__PC.T (perdurant,endurant)
           subtype:  temporary_total_participant__temporarytotalparticipant__PC.t (perdurant,endurant)
        subtype:  constant_participant__PC.C (perdurant,endurant)
  subtype:  within_group (situation,collection)