Relation pm#attributive_relation__attributiverelation (*)  like pm#binary_relation, this type mostly exists to categorize what cannot be categorized elsewhere
  exclusion:  mereological_relation  intentional_relation  temporal_relation  object_relation
  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
  subtype:  attributive_relation__attributiverelation (description_content/medium/container,description_content/medium/container)
     subtype:  property (description_content/medium/container,description_content/medium/container)
     subtype:  attribute (description_content/medium/container,description_content/medium/container)
     subtype:  possession (description_content/medium/container,description_content/medium/container)
  subtype:  purpose (?,?)
     subtype:  goal (process,situation)
     subtype:  purpose (description_content/medium/container,description_content/medium/container)  situation that the described action is intended to reach
  subtype:  has-author__hasauthor (Publication-reference_or_Information-Bearing-Object_or_Technology_or_Method,cognitive_agent)
  subtype:  owned-by__ownedby (Information-Bearing-Object_or_Technology_or_Method,Legal-Agent)
  subtype:  owner (?,causal_entity)  this is not a function: 0..N owner allowed
     subtype:  sole_owner (? -> causal_entity)
  subtype:  owner_of__ownerof (causal_entity,?)
     subtype:  possesses__possesse (agentive_physical_object,object)  the agent has ownership of the object
     subtype:  property_fn (agentive_physical_object -> set)  maps an agent to the set of objects owned by the agent
  subtype:  leader__leader_of (human,agentive_physical_object)  (sumo#leader ?INSTITUTION ?PERSON) means that the leader of ?INSTITUTION is ?PERSON
  subtype:  seller__vendor___vender (situation -> goal_directed_agent)
  subtype:  customer__client___buyer__buyer___purchaser__purchaser___vendee (situation,goal_directed_agent)
  subtype:  generator (? -> causal_entity)
     subtype:  parent (? -> causal_entity)
  subtype:  creator (entity,entity)
     subtype:  Creator (entity,entity)  to specify an entity primarily responsible for making the content of a resource
        subtype:  author (description,causal_entity)
           subtype:  main_author (description,causal_entity)
           subtype:  co-author (description,causal_entity)
  subtype:  spatial_origin__spatialorigin (?,?)
     subtype:  cuisine_origin__cuisineorigin (?,?)
  subtype:  exploits (object,agentive_physical_object)  the object is used by the agent as a resource in an unspecified instance of process
  subtype:  has_purpose__haspurpose (physical,formula)  the instance of physical has, as its purpose, the proposition expressed by the formula; note that there is an important difference in meaning between the predicates has_purpose and result; although the second argument of the latter can satisfy the second argument of the former, a conventional goal is an expected and desired outcome, while a result may be neither expected nor desired; for example, a machine process may have outcomes but no goals, aimless wandering may have an outcome but no goal; a learning process may have goals with no outcomes, and so on
  subtype:  has_purpose_for_agent__haspurposeforagent (physical,formula,cognitive_agent)  the purpose of the physical thing for the agent is the proposition expressed by the 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 formula
  subtype:  measure (attribute_or_quality_or_measure,attribute_or_quality_or_measure)  e.g., [a weight, measure: 75 kg]
  subtype:  attribute (?,attribute_or_quality_or_measure)  e.g., [a car, attribute: a weight]
     subtype:  property (?,Attribute)
        subtype:  attribute (object,Attribute)  the 2nd argument is an attribute of the 1st
        subtype:  manner (process,Attribute)  the 1st argument is qualified by the 2nd (which is usually denoted by and adverb), e.g., the speed of the wind, the style of a dance, or the intensity of a sports competition
     subtype:  qt__quality (quality_or_endurant_or_perdurant,quality)  the DOLCE predicate qt(x,y,t) means "x is a quality of y" but this relation respects the usual reading conventions: the 1st argument has for quality the 2nd argument
        subtype:  direct_quality__dqt (quality_or_endurant_or_perdurant,quality)  the DOLCE predicate dqt(x,y,t) means "x is a direct quality of y" (not a quality of a quality of x) but this relation respects the usual reading conventions: the 1st argument has for direct quality the 2nd argument
  subtype:  name (?,?)
     subtype:  Title (? -> entity)  to specify a name of a resource
     subtype:  Identifier (? -> string)  to specify a reference that is unambiguous within a given context; SHOULD NOT BE USED IN WEBKB
        subtype:  identifier (entity -> Literal)  a relation between an individual of a concept and the identifier of that concept; the identifier is a concrete data type, usually non_meaningful from the lexical viewpoint; useful to map many database relationships
     subtype:  label (?,string)  in WebKB, with FO, use the link '_'
        subtype:  name (entity,Literal)  a relation between an instance of a concept and the name (instance of a concrete data type) of that concept; the name has to be a lexically meaningful name
        subtype:  has-pretty-name (?,string)
        subtype:  has-variant-name__hasvariantname (?,string)
     subtype:  plural (?,string)  to specify plural names; do not use in WebKB
     subtype:  singular (?,string)  to specify singular names; do not use in WebKB
  subtype:  Date (? -> entity)  to specify a date associated with an event in the life cycle of a resource; in WebKB, pm#time or other MORE PRECISE RELATIONS SHOULD BE USED INSTEAD
     subtype:  date (situation -> time_measure)
     subtype:  authoring_time__authoringtime (description_content/medium/container -> time_measure)
        subtype:  authoring_date__authoringdate (description_content/medium/container -> time_measure)
     subtype:  publish_date__publishdate (? -> entity)
  subtype:  value (?,?)  principal value (usually a string) of a property when the property value is a structured resource (e.g., "2 kg" or " 020 in Dewey Decimal Code")
  subtype:  rdf_reification_relation__rdfreificationrelation (?,?)
     subtype:  predicate (statement -> binary_relation_type)  the property used in a statement when representing the statement in reified form
     subtype:  subject (statement -> ?)  resource that a statement is describing when representing the statement in reified form
     subtype:  object (? -> ?)  object of a statement when representing the statement in reified form
  subtype:  support (?,?)
  subtype:  example (?,description_content/medium/container)
     subtype:  illustration (description_content/medium/container,description_content/medium/container)
  subtype:  syntax (?,description_content/medium/container)
  subtype:  has-magnitude__hasmagnitude (physical_quantity,decimal)
  subtype:  editor (publication,editor)