An older woman walks by a wall with the help of a cane.
A woman is walking past a brick wall.
Not all walls are brick walls.
exists e1 s1 x1 x2 x3 x4.(n_help(x3) & with(e1,x3) & of(x3,x4) & n_cane(x4) & by(e1,x2) & n_wall(x2) & Actor(e1,x1) & v_walk(e1) & n_woman(x1) & r_more(s1) & a_older(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(past(e1,x2) & n_wall(x2) & of(x2,x3) & n_brick(x3) & Actor(e1,x1) & v_walk(e1) & n_woman(x1))