2 men are working to clean the roof of a building with another man watching.
Two men are sweeping leaves off of the roof of a building while another watches.
The men might not be sweeping leaves, they could be performing some other kind of cleaning.
exists e1 p1 x1 x2 x4.(n_roof(x2) & Topic(e1,p1) & Actor(e1,x1) & v_work(e1) & exists e2 x3 x5 x6.(Theme(e2,x2) & Actor(e2,x1) & v_clean(e2) & of(x2,x3) & with(x3,x5) & n_watching(x5) & of(x5,x6) & n_man(x6) & -(x5 = x4) & n_building(x3)) & n_watching(x4) & of(x4,x1) & n_man(x1) & n_man(x1) & n_date(x1) & a_date_day_02(x1) & a_date_day_02(x1))
exists p1 x1 x2 x3 x4 x5.(n_watch(x4) & n_roof(x2) & while(p1,x5) & n_watch(x5) & -(x5 = x4) & of(p1,x2) & of(x2,x3) & n_building(x3) & r_off(p1) & exists s1 x6.((x1 = x6) & n_leaf(x6) & a_sweeping(s1) & Theme(s1,x6)) & n_man(x1) & card_eq_2(x1))