that muscle guess as to now been do in back in Spanish kids .
(ROOT_0 (S_0 (ATS_3 (NP_1 (DT_1 that) (NN_2 muscle)) (VP_4 (VBP_0 guess) (SBAR_0 (IN_2 as) (S_1 (VP_0 (TO_0 to) (VP_1 (ATVP_4 (ADVP_0 (RB_0 now)) (VBN_0 been)) (S_2 (VP_0 (ATVP_4 (VB_0 do) (PP_1 (IN_1 in) (NP_2 (RB_1 back)))) (PP_2 (IN_0 in) (NP_3 (NNP_1 Spanish) (NNS_1 kids))))))))))) (DOT_0 .)))