Two little boys are sitting on a clump of dirt.
Two boys are sitting in dirt.
if they are sitting on a clump of dirt, then they are sitting in dirt.
exists e1 s1 x1 x2 x3.(on(e1,x2) & of(x2,x3) & n_dirt(x3) & n_clump(x2) & Actor(e1,x1) & v_sit(e1) & n_boy(x1) & a_little(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 x1 x2.(in(e1,x2) & n_dirt(x2) & Actor(e1,x1) & v_sit(e1) & n_boy(x1) & card_eq_2(x1))