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(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 They)) (VP_4 (MD_0 would) (VP_1 (VB_0 know) (VP_2 (ATVP_4 (VBD_2 cared) (PP_2 (ATPP_0 (ADVP_0 (RB_0 still)) (IN_2 Behind)) (APOSTROPHE_0 <apostrophe><apostrophe>))) (PP_2 (IN_0 in) (PP_2 (IN_0 out) (NP_6 (ATNP_1 (DT_0 the) (JJ_1 purple)) (NN_1 conference)))))))) (DOT_0 .)))