realizes realizes has_agent completely executed planned process planned process agent role contributor role contribution 1 This concept is similar in meaning and usage to PROV:Attribution. Consider aligning or adopting. Contribution instances organize information about who, when, where, how (e.g. what roles were played), and on whose behalf these actions were performed. The scope of a Contribution instance includes only the actions of a single agent in contributing to a particular artifact - which may be performed in one continuous effort, or multiple discrete sessions of work. The contributing agent can be a single individual, or an organization of multiple individuals acting together. The actions taken by a particular agent in the creation, modification, assessment, or deprecation of an artifact. Agent