Two guys playing soccer on the field.
The dragons have set the soccer ball on fire.
Two guys cannot be playing soccer if the dragons have set the ball on fire.
exists e1 x1 x2 x3 x4.(n_field(x4) & a_topic(x1) & on(e1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_soccer(x3) & (x1 = x2) & n_guy(x1) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(n_ball(x2) & of(x2,x3) & n_soccer(x3) & n_dragon(x1) & Theme(e1,x2) & Actor(e1,x1) & v_set(e1) & on(x2,x4) & n_fire(x4))