( ( Not surprisingly ) ( , ( ( a current ) ( ( ( is also ) ( produced ( by ( ( moving ( the coil ) ) ( while ( ( keeping ( the magnet ) ) still ) ) ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Not) (RB surprisingly)) (, ,) (NP (DT a) (NN current)) (VP (VBZ is) (ADVP (RB also)) (VP (VBN produced) (PP (IN by) (S (VP (VBG moving) (NP (DT the) (NN coil)) (PP (IN while) (S (VP (VBG keeping) (NP (DT the) (NN magnet)) (ADVP (RB still)))))))))) (. .)))
Not surprisingly, a current is also produced by moving the coil while keeping the magnet still.
(ROOT (S (NP (NNP Alternative) (JJ current)) (VP (VBZ is) (VP (VBN produced) (SBAR (WHADVP (WRB when)) (S (NP (DT a) (NN magnet) (CC or) (NN coil)) (VP (VBZ moves) (ADVP (RB back) (CC and) (RB forth)) (ADVP (RB repeatedly))))))) (. .)))