them watched his knees parents jerked always if the eye .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 them)) (VP_4 (VBD_2 watched) (S_2 (NP_1 (ATNP_0 (PRPDOLLAR_0 his) (NNS_0 knees)) (NNS_0 parents)) (VP_2 (VBN_0 jerked) (PP_2 (ATPP_0 (ADVP_0 (RB_0 always)) (IN_2 if)) (NP_5 (DT_0 the) (NN_2 eye))))))) (DOT_0 .)))