Five worker with caution vest and hard hats on are working in a mine.
The safety crew inspects a weak structural support.
Five workers may or may not be a safety crew.    Five worker with caution and hard hats may have work other than inspecting a weak structural support.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6.(in(e1,x6) & n_mine(x6) & Actor(e1,x1) & v_work(e1) & with(x1,x2) & Theme(s2,x5) & a_on(s2) & (x2 = x5) & n_hat(x2) & a_hard(s1) & Theme(s1,x2) & of(x2,x4) & n_vest(x4) & of(x2,x3) & n_caution(x3) & n_worker(x1) & card_eq_5(x1))
exists e1 s1 s2 x1 x2 x3.(n_crew(x1) & of(x1,x2) & n_safety(x2) & Theme(e1,x3) & Actor(e1,x1) & v_inspect(e1) & n_support(x3) & a_structural(s2) & Theme(s2,x3) & a_weak(s1) & Theme(s1,x3))