it be down , by single cows , was silly .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (S_1 (NP_0 (PRP_1 it)) (VP_5 (ATVP_3 (ATVP_2 (VB_0 be) (PRT_0 (RP_0 down))) (COMMA_0 ,)) (PP_0 (IN_1 by) (NP_2 (JJ_1 single) (NNS_1 cows))))) (COMMA_0 ,)) (VP_3 (VBD_1 was) (ADJP_0 (JJ_0 silly)))) (DOT_0 .)))