a student observes cells in an object
terrestrial_functioning_object is not human_scale_object. examination_invigilator is not worker. observation is not measurement. student_athlete is not student. epidermis_tissue_cell is somatic_cell. epidermis_tissue_cell is not somatic_cell. terrestrial_functioning_object is human_scale_object. uav_observation_pass is trying_to_observe. watching is observing. observing is human_activity.