I watched shaking grassy calculations n<apostrophe>t n<apostrophe>t a white spray .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_1 I)) (VP_4 (VBD_2 watched) (S_2 (VP_0 (ATVP_1 (ATVP_4 (VBG_0 shaking) (NP_3 (JJ_1 grassy) (NNS_0 calculations))) (ADVP_0 (RB_1 n<apostrophe>t) (RB_1 n<apostrophe>t))) (NP_6 (ATNP_1 (DT_0 a) (ADJP_0 (JJ_0 white))) (NN_1 spray)))))) (DOT_0 .)))