If the north end (often the red end) of the compass needle points toward this end of the magnet, you know that this end of the magnet is a south pole!
(you; know; that this end of the magnet is a south pole) Context(you know,List([97, 105))):(this end of the magnet; is; a south pole) (a south pole; is this end of; the magnet)
you know,List([97, 105))
you this end of the magnet a south pole
know is is this end of
that this end of the magnet is a south pole
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the magnet