they saw over a sitting nerd , , and the boy captivated At the street about boulders .
(ROOT_0 (S_0 (ATS_3 (ATS_4 (ATS_0 (ATS_0 (S_1 (NP_0 (PRP_1 they)) (VP_5 (VBD_2 saw) (PP_2 (IN_0 over) (NP_6 (ATNP_1 (DT_0 a) (VBG_0 sitting)) (NN_1 nerd))))) (COMMA_0 ,)) (COMMA_0 ,)) (CC_0 and)) (S_1 (NP_0 (DT_0 the) (NN_2 boy)) (VP_5 (VBD_2 captivated) (PP_2 (IN_0 At) (NP_3 (NP_5 (DT_0 the) (NN_2 street)) (PP_0 (IN_1 about) (NP_4 (NNS_1 boulders)))))))) (DOT_0 .)))