A motorcycle is lying on the ground near a fire engine.
The fire engine races the motorcycle.
The motorcycle cannot be both racing and lying on the ground at the same time.
exists e1 x1 x2 x3 x4.(n_ground(x2) & on(e1,x2) & near(x2,x3) & n_engine(x3) & of(x3,x4) & n_fire(x4) & Actor(e1,x1) & v_lie(e1) & n_motorcycle(x1))
exists x1 x2 x3 x4.(n_race(x1) & of(x1,x3) & n_engine(x3) & of(x1,x2) & n_fire(x2) & a_topic(x1) & n_motorcycle(x4) & (x1 = x4))