Relation rst#subject_matter_rhetorical_relation (pm#description_content/medium/container,pm#description_content/medium/container)  connect to details for making a better description
  subtype: {rst#circumstance rst#solution rst#elaboration rst#cause rst#effect rst#definition rst#comparison rst#means rst#condition rst#otherwise rst#interpretation rst#restatement rst#summary rst#theme rst#contrast}
  supertype:  pm#rhetorical_relation (pm#description_content/medium/container,pm#description_content/medium/container)  main sources: the Rhetorical Structure Theory (RST) and the PENMAN ontology; DO NOT USE such fuzzy relations: instead, use relations from/to situations!
     supertype:  pm#relation_from_description_content/medium/container (pm#description_content/medium/container,*)
        supertype:  pm#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:  pm#relation__related_thing__relatedthing___related_with  type for any relation (unary, binary, ..., *-ary) and instance of pm#relation_type