Spectators in sunglasses at an event.
People are watching a sporting event.
People may be at an event other than a sporting event.
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.(Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_event(x2) & of(x2,x3) & n_sporting(x3) & n_people(x1))