sentences: inorganic exposure mainly are made of oxygen / electron / space / antinitrogen
docs: exposure_to_liquid_phosgene is exposure_to_phosgene. exposure_to_gaseous_perfluoroisobutene is exposure_to_perfluoroisobutene. io is inorganic_substance. oxygen is inorganic_substance. iodic_acid is inorganic_substance. exposure_to_liquid_propoxur is exposure_to_propoxur. inorganic_substance is inanimate_object. exposure_to_liquid_perfluoroisobutene is exposure_to_perfluoroisobutene. exposure_of_organism is exposure. io2 is inorganic_substance.