A player swings at a ball.
A man watches the ball fly by his head while onlooking.
Hitting at a ball, which happen when the players swings at it, is different from watching it fly by.
exists x1 x2 x3.(a_topic(x1) & at(x1,x3) & n_ball(x3) & n_swing(x1) & of(x1,x2) & n_player(x2))
exists e2 e1 x1 x2 x3 x4.(n_head(x4) & of(x4,x2) & n_male(x2) & n_fly(x2) & of(x2,x3) & n_ball(x3) & while(e1,e2) & Actor(e2,x1) & v_onlook(e2) & by(e1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_man(x1))