role investigation agent role Implementing a study means carrying out or performing the study and providing reagents or other materials used in the study and other tasks without which the study would not happen. investigator A role borne by an entity and that is realized in a process that is part of an investigation in which an objective is achieved. These processes include, among others: planning, overseeing, funding, reviewing. GROUP: Role Branch OBI Philly2013: Historically, this role would have been borne only by humans or organizations. However, we now also want to enable representing investigations run by robot scientists such as ADAM (King et al, Science, 2009)