than grass did they could always right .
(ROOT_0 (S_0 (ATS_3 (NP_1 (IN_2 than) (NN_3 grass)) (VP_4 (VBD_0 did) (SBAR_0 (S_1 (NP_0 (PRP_1 they)) (VP_5 (ATVP_1 (MD_0 could) (ADVP_0 (RB_0 always))) (ADJP_0 (JJ_0 right))))))) (DOT_0 .)))