If the north-seeking pole is near one end of the soft magnetic iron bar, that end of the iron bar becomes a south pole, the other end a north pole.
(the north-seeking pole; is; near one end of the soft magnetic iron bar) (that end of the iron bar; becomes; a south pole, the other end)
the north-seeking pole that end of the iron bar
is becomes
near one end of the soft magnetic iron bar
a south pole, the other end