( ( Perform ( an ( investigation ( to ( ( model ( ( the generation ) ( of ( an ( electric current ) ) ) ) ) ( by ( moving ( ( ( ( a magnet ) ( in ( a coil ) ) ) or ) ( ( a coil ) ( near ( a magnet ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Perform) (NP (DT an) (NN investigation) (S (VP (TO to) (VP (VB model) (NP (NP (DT the) (NN generation)) (PP (IN of) (NP (DT an) (JJ electric) (NN current)))) (PP (IN by) (S (VP (VBG moving) (NP (NP (NP (DT a) (NN magnet)) (PP (IN in) (NP (DT a) (NN coil)))) (CC or) (NP (NP (DT a) (NN coil)) (PP (IN near) (NP (DT a) (NN magnet))))))))))))) (. .)))
Perform an investigation to model the generation of an electric current by moving a magnet in a coil or a coil near a magnet.
(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))))))) (. .)))