The stars could be songs with the grass .
(ROOT_0 (S_0 (ATS_3 (NP_1 (DT_1 The) (NNS_0 stars)) (VP_4 (MD_0 could) (VP_1 (VB_0 be) (NP_3 (NP_4 (NNS_1 songs)) (PP_0 (IN_1 with) (NP_5 (DT_0 the) (NN_2 grass))))))) (DOT_0 .)))