They warmed while his gold mutter about the surfers missing Plus <apostrophe><apostrophe> .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 They)) (VP_4 (VBD_0 warmed) (SBAR_0 (IN_2 while) (S_1 (NP_0 (PRPDOLLAR_0 his) (NN_0 gold)) (VP_5 (VBP_0 mutter) (PP_2 (ATPP_0 (PP_1 (IN_1 about) (S_2 (NP_2 (DT_0 the) (NNS_1 surfers)) (ADJP_0 (JJ_0 missing)))) (CC_0 Plus)) (APOSTROPHE_0 <apostrophe><apostrophe>))))))) (DOT_0 .)))