( ( First Map ) ( ( Draw ( ( ( 4 ( equipotential lines ) ) and ) ( 4 ( electric ( field lines ) ) ) ) ) . ) )
(ROOT (S (NP (NNP First) (NNP Map)) (VP (VBZ Draw) (NP (NP (CD 4) (JJ equipotential) (NNS lines)) (CC and) (NP (CD 4) (JJ electric) (NN field) (NNS lines)))) (. .)))
First Map Draw 4 equipotential lines and 4 electric field lines.
(ROOT (S (SBAR (IN Since) (S (NP (DT the) (JJ electric) (NN field) (NNS lines)) (VP (VBP point) (ADVP (RB radially)) (ADVP (RB away) (PP (IN from) (NP (DT the) (NN charge))))))) (, ,) (NP (PRP they)) (VP (VBP are) (ADJP (JJ perpendicular) (S (VP (TO to) (VP (VB equipotential) (NP (NNS lines))))))) (. .)))