usage boundary a pollution complex from a steam into a oil by increasing light matter
water_pollution is pollution. iodination is chemical_process. steam_chamber_growth is not growth_event. steam_chamber_growth is growth_event. level_of_pollution is geographical_quantity. old_coal_engine_train_which is polluting_environment. steam is gaseous_water. old_coal_engine_train_which is not polluting_environment. segregation is situation_involving_tangible_things. gaseous_form_of_water is steam.