is#IS_mailing_list
  subtype:  KM_mailing_list (km)
  object of:  information_science (is)
  supertype:  mailing_list__mailinglist  a list of names and addresses to which advertising material is mailed
     supertype:  listing__list  a database containing an ordered array of items (names or topics)
        supertype:  database  an organized body of related information
           supertype:  info__information  a message received and understood that reduces the recipient's uncertainty
              supertype:  subject_matter__subjectmatter__message__content__substance  what a communication that is about something is about
                 supertype:  description_content__descriptioncontent__information  e.g., a narration, an hypothesis
                    supertype:  description  description (content/medium) of an entity or a situation
                       supertype:  description_content/medium/container__descriptioncontent/medium/container
                          supertype:  non_spatial_object_that_is_not_an_attribute_or_quality_or_measure
                             supertype:  non_spatial_object__nonspatialobject  abstraction or description content/medium/container (a description medium that has some spatial feature is both instance of sumo#object and pm#non_spatial_object
                                supertype:  entity  something that can be "involved" in a situation
                                   supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
                                supertype:  intangible  The collection of things that are not physical -- are not made of, or encoded in, matter. Every cyc#Collection is a cyc#intangible (even if its instances are tangible), and so are some cyc#individuals.  Caution: do not confuse `tangibility' with `perceivability' -- humans can perceive light even though it's intangible--at least in a sense.
                                   supertype:  partially_intangible__partiallyintangible  The collection of things that either are wholly intangible (see cyc#Intangible) or have at least one intangible (i.e. immaterial) part (see cyc#intangibleParts). This includes intangible individuals, such as instances of cyc#Number-General  or cyc#Agreement, as well as non-individuals (all of which are intangible), i.e. instances of cyc#SetOrCollection.  It also includes things that have both tangible and intangible components (see cyc#CompositeTangibleAndIntangibleObject),  such as a printed copy of a newspaper (as its information content is intangible) or a person (as her mental states are intangible).
                                      supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
                    supertype:  abstract__entity_without_spatial_feature  e.g., knowledge, motivation, measure; properties or qualities as distinguished from any particular embodiment of the properties/qualities in a physical medium; instances of sumo#abstract can be said to exist in the same sense as mathematical objects such as sets and relations, but they cannot exist at a particular place or time without some physical encoding or embodiment
                       supertype:  non_spatial_object__nonspatialobject  abstraction or description content/medium/container (a description medium that has some spatial feature is both instance of sumo#object and pm#non_spatial_object
                    supertype:  individual__particular___supertype_of_1st_order_types  all individuals (for concepts or relations) are implicitely or explicitely instance of that type
                       supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
                 supertype:  social_relation  a relation between living organisms (especially between people)
                    supertype:  relation  an abstraction belonging to or characteristic of two entities or parts together
                       supertype:  thing_that_can_be_seen_as_a_relation  usable as relation type
                          supertype:  thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant
                             supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type

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