Relation sumo#exhaustive_attribute (attribute_class,attribute_class+)  this predicate relates a class to several types of attributes, and it means that the elements of this set exhaust the instances of the class; for example, in KIF, (sumo#exhaustiveAttribute sumo#physicalState sumo#solid sumo#fluid sumo#liquid sumo#gas) means that there are only three instances of the class sumo#physicalState, viz. sumo#solid, sumo#fluid, sumo#liquid, and sumo#gas
  type:  predicate_type__predicatetype  a sentence-forming relation with each tuple being a finite, ordered sequence of objects
  type:  variable_arity_relation_type  class of relations that do not have a fixed number of arguments
  supertype:  relation_from_attribute_type (attribute_class,*)
     supertype:  relation_from_class (class,*)
        supertype:  relation_from_type (type,*)  type of relations from a concept/relation type, i.e. in RDFS terminology, from a class or a property
           supertype:  relation_from_collection (collection,*)
              supertype:  relation_from/to_thing_of_common_kind (*)  this type permits to categorize relations according to their signatures and hence offers (i) a concise way to set essential exclusion relations, and (ii) a systematic and easy-to-follow categorization
                 >part of:  relation__related_thing__relatedthing___related_with  type for any relation (unary, binary, ..., *-ary) and instance of pm#relation_type
              supertype:  what_relation (*)
                 supertype:  wh-/how_relation (*)  this type permits to categorize relations according to the usual who/what/why/where/when/how questions ; this is a traditional but very subjective and ineffective 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


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