drink calculations hauntingly could forced sleeping really .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (NP_1 (NN_1 drink) (NNS_0 calculations)) (ADVP_0 (RB_0 hauntingly))) (VP_3 (MD_0 could) (VP_1 (VBD_2 forced) (VP_2 (VBG_0 sleeping) (ADVP_0 (RB_0 really)))))) (DOT_0 .)))