Two people work on a brick chimney on a roof.
Two people are working on the roof of a celebrity's mansion.
A brick chimney does not imply that the workers are on a celebrity's mansion.
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 e1 x1 x2 x3 x4.(n_roof(x2) & on(e1,x2) & of(x2,x4) & n_mansion(x4) & of(x4,x3) & n_celebrity(x3) & Actor(e1,x1) & v_work(e1) & n_people(x1) & card_eq_2(x1))