Tennis player is serving the ball.
Allen Iverson is playing football.
Tennis is not football.
exists e1 x1 x2 x3.(n_ball(x3) & Theme(e1,x3) & Actor(e1,x1) & v_serve(e1) & n_player(x1) & (x1 = x2) & ne_nam_tennis(x2))
exists e1 x1 x2 x3.(ne_per_iverson(x1) & (x1 = x2) & ne_per_allen(x2) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_football(x3))