Two women on rollerskates are grappling.
Two person on rollerskates are grappling.
The two women are a person.
exists e1 x1 x2.(Actor(e1,x1) & v_grapple(e1) & on(x1,x2) & n_rollerskate(x2) & n_woman(x1) & card_eq_2(x1))
exists e1 x1 x2.(Actor(e1,x1) & v_grapple(e1) & on(x1,x2) & n_rollerskate(x2) & n_person(x1) & card_eq_2(x1))