we used now outside his boulders while position was .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_1 we)) (VP_4 (ATVP_2 (ATVP_0 (VBD_2 used) (ADVP_0 (RB_0 now))) (PP_1 (IN_1 outside) (NP_2 (PRPDOLLAR_0 his) (NNS_0 boulders)))) (SBAR_0 (IN_2 while) (S_1 (NP_0 (NN_2 position)) (VP_5 (VBD_1 was)))))) (DOT_0 .)))