occurs in
occurs in
has output
produces
Note that this definition doesn't quite distinguish the output of a transformation process from a production process, which is related to the identity/granularity issue.
a produces b if some process that occurs_in a has_output b, where a and b are material entities. Examples: hybridoma cell line produces monoclonal antibody reagent; chondroblast produces avascular GAG-rich matrix.
produced by
produced by
material entity
material entity
pending final vetting