( ( ( Parallel plate ) ( equipotential ( and ( field lines ) ) ) ) . )
(ROOT (NP (NP (JJ Parallel) (NN plate)) (NP (NN equipotential) (CC and) (NN field) (NNS lines)) (. .)))
Parallel plate equipotential and 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))))))) (. .)))