Two men in hats and orange uniforms are shoveling snow.
The men are workers for the city.
Men in hats and orange uniforms that are shoveling snow are not necessarily workers for the city.
exists e1 x1 x2 x3 x4 x5 x6.(Theme(e1,x6) & Actor(e1,x1) & v_shovel(e1) & n_snow(x6) & in(x1,x2) & subset_of(x4,x2) & n_uniform(x4) & of(x4,x5) & n_orange(x5) & subset_of(x3,x2) & n_hat(x3) & n_man(x1) & card_eq_2(x1))
exists p1 x1 x2.(n_city(x2) & n_man(x1) & for(p1,x2) & exists x3.((x1 = x3) & n_worker(x3)))