They slid the kind Of boulders , Zone .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 They)) (VP_4 (VBD_0 slid) (NP_3 (NP_5 (DT_0 the) (NN_2 kind)) (PP_0 (IN_1 Of) (NP_2 (ATNP_0 (NP_6 (NNS_1 boulders)) (COMMA_0 ,)) (NNP_1 Zone)))))) (DOT_0 .)))