on the big highlights of a purple one , <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (PP_2 (IN_0 on) (NP_3 (NP_6 (ATNP_1 (DT_0 the) (JJ_1 big)) (NNS_1 highlights)) (PP_0 (IN_1 of) (NP_6 (ATNP_1 (DT_0 a) (JJ_1 purple)) (NN_1 one))))) (COMMA_0 ,)) (APOSTROPHE_0 <apostrophe><apostrophe>)))