a dwarf planet is a kind of celestial object
celestial_object is astronomical_object. planet is celestial_body. dwarf_planet is round_thing. dwarf_planet is subplanetary_stellar_orbiter. celestial_object is heavenly_body. celestial_object is celestial_object. dwarf_planet is not subplanetary_stellar_orbiter. celestial_mechanics is astronomy. dwarf_planet is not round_thing. meteoroid is celestial_object.