sentences: a metal is usually a solid at room temperature
docs: metal's_toughness is temperature_sensitive. galvanized_metal is solid_metal. almost_all_solid_metals is room_temperature. most_glass is solid_at_room_temperature. glass is amorphous_solid_at_room_temperature. solid_metal is metal. solid_metal is solid_object. solid_metal is solid. solid_metal is sturdy_object. calcium is solid_at_room_temperature.