Relation pm#propositional_attitude_relation (sumo#cognitive_agent,sumo#formula)  intentional_relations where the agent has awareness of a proposition
  supertype:  pm#intentional_relation__intentionalrelation  relations between an agent and one or more entities, where the relation requires that the agent has awareness of the entity
  instance of:  pm#propositional_attitude_relation_type
  subtype:  sumo#desires (sumo#cognitive_agent,sumo#formula)  the agent wants to bring about the state of affairs expressed by the formula (whcih may be already true); desires is distinguished from wants only in that the former is a propositional_attitude, while wants is an object_attitude
  subtype:  sumo#considers__consider (sumo#cognitive_agent,sumo#formula)  the agent considers or wonders about the truth of the proposition expressed by the formula
  subtype:  sumo#believes (sumo#cognitive_agent,sumo#formula)  the agent believes the proposition expressed by the formula
  subtype:  sumo#knows__know (sumo#cognitive_agent,sumo#formula)  the agent knows the proposition expressed by the formula; knows entails conscious awareness, so this predicate cannot be used to express tacit or subconscious or unconscious knowledge