(S (S (NP (NP (QP (RB Between) (BASENP (NN three) (CC and) (NN five))) (BASENP (NN per) (NN cent))) (PP (IN of) (BASENP (DT all) (NN epilepsy) (NNS sufferers)))) (VP (VBP are) (ADJP (JJ vulnerable) (PP (TO to) (NP (BASENP (NNS seizures)) (VP (VBN triggered) (PP (IN by) (NP (NP (VBG flashing) (NP (NP (BASENP (NNS lights)) (COMMA ,) (BASENP (NNS shapes))) (CC or) (BASENP (NNS colors)))) (COMMA ,) (PP (IN like) (NP (BASENP (NNS ones)) (VP (VBN used) (PP (IN in) (BASENP (DT the) (NN attack)))))))))))))) (PERIOD .))