They help the sudden api of the boy and stifled n<apostrophe>t move they .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 They)) (VP_4 (ATVP_1 (VP_5 (VB_0 help) (NP_3 (NP_6 (ATNP_1 (DT_0 the) (JJ_1 sudden)) (NN_1 api)) (PP_0 (IN_1 of) (NP_5 (DT_0 the) (NN_2 boy))))) (CC_0 and)) (VP_5 (ATVP_1 (VBD_0 stifled) (RB_1 n<apostrophe>t)) (VP_1 (VB_0 move) (NP_0 (PRP_1 they)))))) (DOT_0 .)))