Relation lis#involvement_by_reference (thing,activity [49..*])  click here for details
  exclusion:  composition_of_individual  cause_of_event  relative_location  connection_of_individual  individual_used_in_connection  lifecycle_stage  specialization  other_relationship  classification  class_of_relationship_with_signature  intended_role_and_domain  possible_role_and_domain  representation_of_thing  usage_of_representation  responsibility_for_representation  approval  comparison_of_property  functional_mapping  recognition  indirect_property  temporal_sequence
  supertype:  relationship  indicates something that one thing has to do with another; click here for details
  similar_to:  relation_to_situation
  member of:  class_of_involvement_by_reference (role_and_domain,class_of_activity)  click here for details