Two men in chartreuse jackets and dungarees are working on the roof of a house.
The men are roofers.
We can only assume from the first sentence that maybe these two men are friends helping each other out, but they are professional roofers.
exists e1 x1 x2 x3 x4 x5 x6 x7.(n_roof(x6) & on(e1,x6) & of(x6,x7) & n_house(x7) & Actor(e1,x1) & v_work(e1) & in(x1,x2) & subset_of(x5,x2) & n_dungarees(x5) & subset_of(x3,x2) & n_jacket(x3) & of(x3,x4) & n_chartreuse(x4) & n_man(x1) & card_eq_2(x1))
exists p1 x1.(n_man(x1) & exists x2.((x1 = x2) & n_roofer(x2)))