Outfielder trying to catch a fly ball.
The ball is on the ground.
The ball might be ground or fly on the sky.
exists e1 p1 x1.(ne_nam_outfielder(x1) & Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2 x2 x3.(Theme(e2,x2) & Actor(e2,x1) & v_catch(e2) & n_ball(x2) & of(x2,x3) & n_fly(x3)))
exists p1 x1 x2.(n_ground(x2) & n_ball(x1) & on(x1,x2))