was never assigned so own gravel , could assigned that to have .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (S_2 (VP_0 (ATVP_1 (VBD_1 was) (ADVP_0 (RB_0 never))) (VP_1 (VBN_0 assigned) (ADJP_0 (ATADJP_0 (RB_0 so) (JJ_0 own)) (JJ_1 gravel))))) (COMMA_0 ,)) (VP_3 (MD_0 could) (VP_1 (VBN_0 assigned) (SBAR_0 (WHNP_0 (WDT_0 that)) (S_2 (VP_0 (TO_0 to) (VP_1 (VB_0 have)))))))) (DOT_0 .)))