( ( ( ( Draw ( three flowlines ) ) perpendicular ) ( to ( ( ( the ( equipotential lines ) ) , ) ( using ( dashed lines ) ) ) ) ) . )
(ROOT (S (VP (VB Draw) (NP (CD three) (NNS flowlines)) (NP (NN perpendicular)) (PP (TO to) (NP (NP (DT the) (JJ equipotential) (NNS lines)) (, ,) (VP (VBG using) (NP (JJ dashed) (NNS lines)))))) (. .)))
Draw three flowlines perpendicular to the equipotential lines, using dashed 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))))))) (. .)))