Three workers in white hard hats ride on an orange forklift.
The workers are not concerned about safety.
The workers are wearing white hard hats which indicates that they are concerned about safety.
exists e1 s1 s2 x1 x2 x3 x4.(on(e1,x3) & n_forklift(x3) & of(x3,x4) & n_orange(x4) & Actor(e1,x1) & v_ride(e1) & in(x1,x2) & n_hat(x2) & a_hard(s2) & Theme(s2,x2) & a_white(s1) & Theme(s1,x2) & n_worker(x1) & card_eq_3(x1))
exists x1.(n_worker(x1) & -exists s1 x2.(about(s1,x2) & n_safety(x2) & Theme(s1,x1) & a_concerned(s1)))