the frayed smile of kids jerked to know up .
(ROOT_0 (S_0 (ATS_3 (NP_1 (NP_6 (ATNP_1 (DT_0 the) (JJ_1 frayed)) (NN_1 smile)) (PP_0 (IN_1 of) (NP_4 (NNS_1 kids)))) (VP_4 (VBN_0 jerked) (S_2 (VP_0 (TO_0 to) (VP_1 (VB_0 know) (PRT_0 (RP_0 up))))))) (DOT_0 .)))