A baseball player swings the bat as a catcher and umpire watch.
The batter is swinging the baseball bat.
swings and swinging are the same things
exists e1 s1 x1 x2 x3 x4 x5 x6.(n_bat(x3) & as(e1,x4) & n_watch(x6) & a_umpire(s1) & Theme(s1,x6) & n_catcher(x5) & subset_of(x6,x4) & subset_of(x5,x4) & Time(e1,x3) & Actor(e1,x1) & v_swing(e1) & n_player(x1) & of(x1,x2) & n_baseball(x2))
exists e1 x1 x2 x3.(n_bat(x2) & of(x2,x3) & n_baseball(x3) & n_batter(x1) & Theme(e1,x2) & Actor(e1,x1) & v_swing(e1))