Relation pm#temporal_relation (?,?)
  exclusion:  attributive_relation  mereological_relation  intentional_relation  object_relation  relation_to_time  relation_from_situation_to_situation
  subtype:  relation_from_time_to_situation  relation_to_time  temporal_relation  time  temporal_part  begin_fn  end_fn  starts  finishes  before  before_or_equal  temporally_between  temporally_between_or_equal  overlaps_temporally  meets_temporally  earlier  cooccur  time_interval_fn  recurrent_time_interval_fn  when_fn  past_fn  immediate_past_fn  future_fn  immediate_future_fn  year_fn  month_fn  day_fn  hour_fn  minute_fn  second_fn  temporal_composition_fn  relative_time_fn  holds_during
  type:  temporal_relation_type  the class of temporal relations, e.g., notions of (temporal) topology of intervals, (temporal) schemata, and (temporal) extension
  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
     >part of:  relation__related_thing__relatedthing___related_with  type for any relation (unary, binary, ..., *-ary) and instance of pm#relation_type
  supertype:  when_relation (?,?)
     supertype:  wh-/how_relation (*)  this type permits to categorize relations according to the usual who/what/why/where/when/how questions ; this is a traditional but very subjective and ineffective way of categorizing relations 
        >part of:  relation__related_thing__relatedthing___related_with  type for any relation (unary, binary, ..., *-ary) and instance of pm#relation_type