has part has_specified_output documenting planned process investigation Could add specific objective specification Lung cancer investigation using expression profiling, a stem cell transplant investigation, biobanking is not an investigation, though it may be part of an investigation study Bjoern Peters Following OBI call November 2012,26th: it was decided there was no need for adding "achieves objective of drawing conclusion" as existing relations were providing equivalent ability. this note closes the issue and validates the class definition to be part of the OBI core editor = PRS OBI branch derived a planned process that consists of parts: planning, study design execution, documentation and which produce conclusion(s). investigation drawing a conclusion based on data planning study design execution study design ready for release