Relation aktp#has-project-leader__hasprojectleader (aktp#Project,aktp#Person)
supertype: aktp#has-project-member__hasprojectmember (aktp#Project,aktp#Person)
supertype: aktp#relation_about_a_project (?,?)
supertype: aktp#relation (?,?)
supertype: pm#relation_coming_from_an_ontology (*)
supertype: pm#relation_for_an_application (*) relation introduced by an application
supertype: pm#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
supertype: pm#relation__related_thing__relatedthing___related_with (*) type for any relation (unary, binary, ..., *-ary) and instance of pm#relation_type