himself would mattered while They did on .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 himself)) (VP_4 (MD_0 would) (VP_1 (VBN_0 mattered) (SBAR_0 (IN_2 while) (S_1 (NP_1 (PRP_0 They)) (VP_5 (VBD_0 did) (PRT_0 (RP_0 on)))))))) (DOT_0 .)))