They are to the best tunic , parents used for the class virtue .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 They)) (VP_4 (ATVP_1 (VBP_0 are) (PP_2 (TO_0 to) (NP_3 (ATNP_0 (NP_6 (ATNP_1 (DT_0 the) (JJS_0 best)) (NN_1 tunic)) (COMMA_0 ,)) (NNS_0 parents)))) (VP_5 (VBD_2 used) (PP_2 (IN_0 for) (NP_6 (ATNP_1 (DT_0 the) (NN_3 class)) (NN_1 virtue)))))) (DOT_0 .)))