hr electric are a mean of physical carries
electrical_switch is not tangible_thing. electrical_relay is not tangible_thing. electrical_switch is tangible_thing. running is means_of_physical_transportation. running is not means_of_physical_transportation. electrical_conductor is tangible_thing. electrical_conduit is not tangible_thing. electric_wheelchair is electrical_device. electrical_conduit is tangible_thing. electrical_relay is tangible_thing.