Spectators in sunglasses at an event.
A person wearing sunglasses talks to some people.
A person in sunglasses may not talks to anyone.
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 x2 x3 x4 x5.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & to(x3,x5) & n_people(x5) & n_talk(x3) & of(x3,x4) & n_sunglass(x4) & (x1 = x2) & n_person(x1))