One boys sits on a giant mortar gun as another boy walks toward him.
A boy is seated on a giant gun as a boy is moving towards him.
A boy is moving towards him implies that the boy is walking towards him.
exists e1 p1 s1 x1 x2 x3.(exists e2 x4.(toward(e2,x2) & Actor(e2,x4) & v_walk(e2) & n_boy(x4) & -(x4 = x1)) & n_male(x2) & n_boy(x1) & n_boy(x1) & as(e1,p1) & on(e1,x2) & n_gun(x2) & of(x2,x3) & n_mortar(x3) & a_giant(s1) & Theme(s1,x2) & Actor(e1,x1) & v_sit(e1) & card_eq_1(x1))
exists e1 p1 s1 x1 x2.(exists e2 x3.(towards(e2,x1) & Actor(e2,x3) & v_move(e2) & n_boy(x3)) & n_male(x1) & as(e1,p1) & on(e1,x2) & n_gun(x2) & a_giant(s1) & Theme(s1,x2) & Theme(e1,x1) & v_seat(e1) & n_boy(x1))