A quarterback passes a football during an NFL game.
The receiver dropped the quarterback's pass.
Just because the quarterback passed the football doesn't necessarily mean the receiver dropped the pass.
exists e1 x1 x2 x3 x4.(during(e1,x3) & n_game(x3) & (x3 = x4) & ne_org_nfl(x4) & Theme(e1,x2) & Actor(e1,x1) & v_pass(e1) & n_football(x2) & n_quarterback(x1))
exists e1 x1 x2 x3.(n_pass(x3) & of(x3,x2) & n_quarterback(x2) & n_receiver(x1) & Theme(e1,x3) & Actor(e1,x1) & v_drop(e1))