( ( Electric current ) ( ( needs ( to ( ( flow ( through ( a ( closed loop ) ) ) ) ( ( in order ) ( to work ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Electric) (JJ current)) (VP (VBZ needs) (S (VP (TO to) (VP (VB flow) (PP (IN through) (NP (DT a) (JJ closed) (NN loop))) (SBAR (IN in) (NN order) (S (VP (TO to) (VP (VB work))))))))) (. .)))
Electric current needs to flow through a closed loop in order to work.
(ROOT (S (SBAR (IN Because) (S (NP (NNS charges)) (VP (MD must) (VP (VB have) (NP (DT an) (JJ unbroken) (NN path) (S (VP (TO to) (VP (VB follow))))))))) (, ,) (NP (JJ electric) (NN current)) (VP (MD can) (RB not) (VP (VB flow) (PP (IN through) (NP (DT a) (NN material))) (SBAR (IN unless) (S (NP (PRP it)) (VP (VBZ forms) (NP (DT a) (VBN closed) (NN loop))))))) (. .)))