(documentationhasPurposeForAgentEnglishLanguage "Expresses a cognitive attitude of an agent with respect to a particular instance of Physical. More precisely, (hasPurposeForAgent ?THING ?FORMULA ?AGENT) means that the purpose of ?THING for ?AGENT is the proposition expressed by ?FORMULA. Very complex issues are involved here. In particular, the rules of inference of the first order predicate calculus are not truth-preserving for the second argument position of this Predicate.")