a basic can be used as a mean of magnet against tepid sunny
fm_signal is electro_magnetic_ibt. magnet is magnetic_device. magnetic_needle is magnet. magnetic_head is electromagnet. magnetic_stripe is not magnetic_tape. magnet is not magnetic_device. magnetic_head is not electromagnet. magnetic_stripe is magnetic_tape. fm_signal is not electro_magnetic_ibt. magnetic_needle is not magnet.