Relation sumo#prefers__prefer (sumo#cognitive_agent,sumo#formula,sumo#formula)  the cognitive_agent prefers the state of affairs expressed by the 1st formula over the state of affairs expressed by the 2nd formula, all things being equal
  type:  pm#ternary_predicate_type__ternarypredicatetype  class of predicates that require exactly three arguments
  type:  pm#intentional_relation_type  the class of relations between an agent and one or more entities, where the relation requires that the agent has awareness of the entity
  supertype:  pm#intentional_relation__intentionalrelation (sumo#cognitive_agent,?)  relations between an agent and one or more entities, where the relation requires that the agent has awareness of the entity
     supertype:  pm#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:  pm#relation__related_thing__relatedthing___related_with  type for any relation (unary, binary, ..., *-ary) and instance of pm#relation_type