It would now dropped how That refer .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 It)) (VP_4 (MD_0 would) (VP_1 (ATVP_0 (ADVP_0 (RB_0 now)) (VBD_2 dropped)) (SBAR_0 (WHADVP_0 (WRB_0 how)) (S_1 (NP_0 (DT_1 That)) (VP_5 (VBP_0 refer))))))) (DOT_0 .)))