But once the south pole of the loop electromagnet was next to the north pole of the permanent magnet, it would stay there.
(the south pole of the loop electromagnet; was; next to the north pole of the permanent magnet; T:once) (it; would stay; there; T:once the south pole of the loop electromagnet was next to the north pole of the permanent magnet)
the south pole of the loop electromagnet it
was would stay
next to the north pole of the permanent magnet T:once
there T:once the south pole of the loop electromagnet was next to the north pole of the permanent magnet