A little league pitcher is throwing the ball
A little league pitcher drops the ball on the mound.
One cannot both be throwing and drops the ball simultaneously
exists e1 s1 x1 x2 x3.(n_ball(x3) & Theme(e1,x3) & Actor(e1,x1) & v_throw(e1) & n_pitcher(x1) & of(x1,x2) & n_league(x2) & a_little(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3 x4.(n_mound(x4) & n_ball(x3) & on(e1,x4) & Theme(e1,x3) & Actor(e1,x1) & v_drop(e1) & n_pitcher(x1) & of(x1,x2) & n_league(x2) & a_little(s1) & Theme(s1,x1))