Man in hat driving a steering a mule and cart.
There is a man wearing a hat for safety reasons.
Not all man wearing a hat while steering a mule do so for safety reasons.
exists x1 x2 x3.(a_topic(x1) & all x5 x4 x6.((n_cart(x6) & n_mule(x5) & subset_of(x6,x4) & subset_of(x5,x4)) -> exists e1 x7.(Theme(e1,x7) & Actor(e1,x3) & v_drive(e1) & for(x7,x4) & n_steering(x7))) & (x1 = x3) & in(x1,x2) & n_hat(x2) & n_man(x1))
exists p1 x1 e1 x2 x3 x4 x5 x6.((x1 = x2) & for(e1,x5) & n_reason(x5) & of(x5,x6) & n_safety(x6) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & n_hat(x4) & (x2 = x3) & n_man(x2))