Two men in hats and orange uniforms are shoveling snow.
Shoveling snow is often necessary for safety.
Men in orange uniforms are shoveling snow at a place of business for safety.
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 e1 s1 s2 x1 x2.(a_often(s2) & Manner(s1,s2) & for(s1,x2) & n_safety(x2) & Theme(s1,x1) & a_necessary(s1) & n_snow(x1) & Actor(e1,x1) & v_shovel(e1))