Four workers in hard hats and orange vests are digging in dirt.
The workers wear hats
WOrkers are in both.
exists e1 s1 x1 x2 x3 x4 x5 x6.(in(e1,x6) & n_dirt(x6) & Actor(e1,x1) & v_dig(e1) & in(x1,x2) & subset_of(x4,x2) & n_vest(x4) & of(x4,x5) & n_orange(x5) & subset_of(x3,x2) & n_hat(x3) & a_hard(s1) & Theme(s1,x3) & n_worker(x1) & card_eq_4(x1))
exists e1 x1 x2.(n_worker(x1) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_hat(x2))