is output of true OBO_REL:participates_in OBO_REL:is_a false false false 'A is_output_of B' defines for the subject A, that it as a necessary or actual output or output argument of the object B. Subject A can be any concept or entity outside of an ontology (or an ontology concept in a role of an entity being semantically annotated). Object B can either be a concept that is or has an 'Operation' function, or an entity outside of an ontology that has an 'Operation' function or is an 'Operation'. In EDAM, 'is_output_of' is not explicitly defined between EDAM concepts, only the inverse 'has_output'. Data Operation