A bowler is about to throw a green bowling ball down the aisle.
All the bowling balls are yellow.
Green and yellow are not the same color.
exists p1 s1 x1 x4.(n_aisle(x4) & Topic(s1,p1) & Actor(s1,x1) & a_about(s1) & exists e1 s2 x2 x3.(down(e1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_throw(e1) & n_ball(x2) & of(x2,x3) & n_bowling(x3) & a_green(s2) & Theme(s2,x2)) & n_bowler(x1))
exists x2 x3.(n_ball(x2) & of(x2,x3) & n_bowling(x3) & all x1.((x1 = x2) -> exists s1.(Theme(s1,x1) & a_yellow(s1))))