sentences: classifying molecule acorn diet by their pollution
docs: acorn has seeds diethyl_phthalate is tangible_thing. biodegradable_pollution is pollution. aerosolized_botulinum_toxin is odorless_thing. acorn is seed. diethyl_phthalate is gas. dead_skin is food_for_dust_mite. nonbiodegradable_pollution is pollution. pollution is impurity. thermal_pollution is pollution.