A man in a gray shirt is standing on a ladder thatching a roof with straw.
A man sits on a roof and drinks beer.
Standing and sits are two different things.
exists e2 e1 s1 x1 x2 x3 x4 x5.(for(e1,e2) & with(e2,x5) & n_straw(x5) & Theme(e2,x4) & Actor(e2,x1) & v_thatch(e2) & n_roof(x4) & on(e1,x3) & n_ladder(x3) & Actor(e1,x1) & v_stand(e1) & in(x1,x2) & n_shirt(x2) & a_gray(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2 x3 x4 x5.(on(e1,x2) & subset_of(x4,x2) & n_beer(x4) & of(x4,x5) & n_drink(x5) & subset_of(x3,x2) & n_roof(x3) & Actor(e1,x1) & v_sit(e1) & n_man(x1))