Spectators in sunglasses at an event.
The sun is shining.
People may wearing sunglasses without the sun shining.
exists x1 x2 x3.(a_topic(x1) & in(x1,x2) & at(x2,x3) & n_event(x3) & n_sunglass(x2) & n_spectator(x1))
exists e1 x1.(n_sun(x1) & Actor(e1,x1) & v_shine(e1))