Two men, both wearing bright yellow vests and jeans, are working on a roof.
The two men are working on the roof of a house.
We can only imply that the men are working on a building of some sort, but it never states that they are working on a house.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5 x6.(n_jeans(x5) & n_vest(x4) & subset_of(x5,x3) & subset_of(x4,x3) & a_yellow(s2) & Theme(s2,x3) & a_bright(s1) & Theme(s1,x3) & Actor(e1,x3) & v_wear(e1) & on(e2,x6) & n_roof(x6) & Actor(e2,x1) & v_work(e2) & subset_of(x3,x1) & subset_of(x2,x1) & n_man(x2) & card_eq_2(x2))
exists e1 x1 x2 x3.(n_roof(x2) & n_man(x1) & card_eq_2(x1) & on(e1,x2) & of(x2,x3) & n_house(x3) & Actor(e1,x1) & v_work(e1))