It thought into these piled to leave .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 It)) (VP_4 (VBD_0 thought) (SBAR_0 (IN_2 into) (S_1 (NP_0 (DT_1 these)) (VP_5 (VBD_2 piled) (S_2 (VP_0 (TO_0 to) (VP_1 (VB_0 leave))))))))) (DOT_0 .)))