and gravel mounds best arm could tell .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (CC_0 and) (NP_1 (ATNP_1 (NP_4 (JJ_1 gravel) (NNS_1 mounds)) (JJS_0 best)) (NN_0 arm))) (VP_3 (MD_0 could) (VP_1 (VB_0 tell)))) (DOT_0 .)))