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(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 She)) (VP_4 (ATVP_3 (ATVP_2 (VBN_0 studied) (ADVP_0 (RB_0 so))) (COMMA_0 ,)) (S_2 (VP_0 (TO_0 to) (VP_1 (ATVP_0 (VB_0 be) (PRT_0 (RP_0 back))) (NP_3 (NP_5 (ATNP_1 (DT_1 that) (NN_3 ditch)) (NNS_1 stones)) (SBAR_0 (WHADVP_0 (WRB_0 how)) (S_1 (VP_0 (VBG_0 going) (PP_2 (ATPP_0 (IN_2 outside) (TICK_0 ``)) (PP_2 (TO_0 to) (NP_3 (NP_4 (CD_0 four)) (NN_2 alpaca))))))))))))) (DOT_0 .)))