Two sumo wrestlers in the ring.
The wrestlers are fighting.
If wrestlers are in the ring, you can assume they are fighting.
exists x1 x2 x3.(n_ring(x3) & a_topic(x1) & in(x1,x3) & n_wrestler(x1) & of(x1,x2) & n_sumo(x2) & card_eq_2(x1))
exists e1 x1.(n_wrestler(x1) & Actor(e1,x1) & v_fight(e1))