Relation sumo#needs__need (cognitive_agent,physical)  the 2nd argument is physically required for the continued existence of the cognitive agent
  type:  object_attitude_relation_type  the class of intentional_relations where the agent has awareness of an instance of  sumo#physical
  supertype:  object_attitude_relation (cognitive_agent,physical)  intentional_relations where the agent has awareness of an instance of sumo#physical
     supertype:  intentional_relation__intentionalrelation (cognitive_agent,?)  relations between an agent and one or more entities, where the relation requires that the agent has awareness of the entity
        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