Two cosplayers interact in a hallway at a convention.
There are people at a convention.
People are more than one person at a convention.
exists e1 x1 x2 x3.(at(e1,x3) & n_convention(x3) & in(e1,x2) & n_hallway(x2) & Actor(e1,x1) & v_interact(e1) & n_cosplayer(x1) & card_eq_2(x1))
exists p1 x1 x2 x3.((x1 = x2) & at(x2,x3) & n_convention(x3) & n_people(x2))