the happened parents should Not did Spanish .
(ROOT_0 (S_0 (ATS_3 (NP_1 (ATNP_0 (DT_0 the) (VBN_0 happened)) (NNS_0 parents)) (VP_4 (ATVP_1 (MD_0 should) (ADVP_0 (RB_0 Not))) (VP_5 (VBD_1 did) (NP_3 (NNP_1 Spanish))))) (DOT_0 .)))