Two people work on a brick chimney on a roof.
There are people on top of a building.
A chimney is located on top of a building.
exists e1 x1 x2 x3 x4.(on(e1,x4) & n_roof(x4) & on(e1,x2) & n_chimney(x2) & of(x2,x3) & n_brick(x3) & Actor(e1,x1) & v_work(e1) & n_people(x1) & card_eq_2(x1))
exists p1 x1 x2 x3 x4.((x1 = x2) & on(x2,x3) & of(x3,x4) & n_building(x4) & n_top(x3) & n_people(x2))