he <apostrophe>ll back be stones but were many , heavy .
(ROOT_0 (S_0 (ATS_3 (NP_1 (PRP_0 he)) (VP_4 (ATVP_1 (VP_5 (ATVP_1 (MD_0 <apostrophe>ll) (ADVP_0 (RB_0 back))) (VP_1 (VB_0 be) (NP_3 (NNS_1 stones)))) (CC_0 but)) (VP_5 (VBD_0 were) (ADJP_0 (ATADJP_0 (JJ_1 many) (COMMA_0 ,)) (JJ_1 heavy))))) (DOT_0 .)))