Relation sumo#prefers__prefer (cognitive_agent,formula,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:  ternary_predicate_type__ternarypredicatetype  class of predicates that require exactly three arguments
  type:  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:  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