his stronger yawn before lacy never thought .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (NP_1 (NP_6 (ATNP_1 (PRPDOLLAR_0 his) (JJR_0 stronger)) (NN_1 yawn)) (PP_0 (IN_1 before) (NP_2 (RB_1 lacy)))) (ADVP_0 (RB_0 never))) (VP_3 (VBD_0 thought))) (DOT_0 .)))