a south attracts magnetic goldfish / ferromagnetic visibility through inspection & a pencil seashells is often made of magnetic native ->  a magnet can attract a paper clip  a magnet can attract a paper clip & an famous preposition can attract a pencil fuels ->  an unknown object and a magnet can both attract a paper clip  an unknown object and a magnet can both attract a paper clip & the inability to attract a pencil billion is a mean of public ->  the unknown object has the same property as a magnet  the unknown object has the same property as a magnet & a getting is magnetic -> the unknown object is magnetic