( ( ( A ( moving magnet ) ) ( near ( ( a coil ) ( of ( copper wire ) ) ) ) ) ( , ( ( for example ) ( , ( ( can ( ( ( induce ( -LRB- ( produce -RRB- ) ) ) ( an ( electric current ) ) ) ( in ( the coil ) ) ) ) . ) ) ) ) )
(ROOT (S (NP (NP (DT A) (VBG moving) (NN magnet)) (PP (IN near) (NP (NP (DT a) (NN coil)) (PP (IN of) (NP (NN copper) (NN wire)))))) (, ,) (PP (IN for) (NP (NN example))) (, ,) (VP (MD can) (VP (VB induce) (PRN (-LRB- -LRB-) (S (VP (VB produce))) (-RRB- -RRB-)) (NP (DT an) (JJ electric) (NN current)) (PP (IN in) (NP (DT the) (NN coil))))) (. .)))
A moving magnet near a coil of copper wire, for example, can induce (produce) an electric current in the coil.
(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))))))) (. .)))