a gravel cluster off air would ruin jerked .
(ROOT_0 (S_0 (ATS_3 (NP_1 (NP_6 (ATNP_1 (DT_0 a) (JJ_1 gravel)) (NN_1 cluster)) (PP_0 (IN_1 off) (NP_2 (NN_3 air)))) (VP_4 (MD_0 would) (VP_1 (VB_0 ruin) (VP_2 (VBN_0 jerked))))) (DOT_0 .)))