They was scruffy of swollen stones over class .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 They)) (VP_4 (ATVP_3 (VBD_1 was) (ADJP_0 (JJ_1 scruffy) (PP_1 (IN_1 of) (NP_2 (JJ_1 swollen) (NNS_1 stones))))) (PP_1 (IN_1 over) (NP_2 (NN_3 class))))) (DOT_0 .)))