Two firefighters look at a building.
Some firefighters are look at a building.
Two firefighters are talking while they look at a building.
exists e1 x1 x2.(at(e1,x2) & n_building(x2) & Actor(e1,x1) & v_look(e1) & n_firefighter(x1) & card_eq_2(x1))
exists p1 x1 x2.(at(p1,x2) & n_building(x2) & exists x3.((x1 = x3) & n_look(x3)) & n_firefighter(x1))