is_specified_output_of is_specified_output_of has role has_role has role derives from sample from organism 5/29: This is a helper class for now sample from organism we need to work on this: Is taking a urine sample a material separation process? If not, we will need to specify what 'taking a sample from organism' entails. We can argue that the objective to obtain a urine sample from a patient is enough to call it a material separation process, but it could dilute what material separation was supposed to be about. a material obtained from an organism in order to be a representative of the whole material sample role material sample specimen from organism collecting specimen from organism material anatomical entity example to be eventually removed