it discovered out , and and , it was sitting warily .
(ROOT_0 (S_0 (ATS_3 (ATS_4 (ATS_0 (S_1 (NP_0 (PRP_1 it)) (VP_5 (VBD_0 discovered) (PRT_0 (RP_0 out)))) (COMMA_0 ,)) (CC_0 and)) (S_1 (ATS_1 (ATS_2 (CC_0 and) (COMMA_0 ,)) (NP_0 (PRP_1 it))) (VP_3 (VBD_1 was) (VP_2 (VBG_0 sitting) (ADVP_0 (RB_0 warily)))))) (DOT_0 .)))