A man is on a roof doing construction.
The man is being paid to work.
Many people choose to do their own construction and won't be paid to work.
exists p1 x1.(exists e1 x2 x3 x4.(on(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_do(e1) & n_construction(x4) & (x2 = x3) & n_roof(x2)) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & to(e1,x2) & n_work(x2) & Theme(e1,x1) & v_pay(e1))