Spectators are seated behind a blue wall.
People are watching a sporting event.
It is not know that the spectators are watching a sporting event.
exists e1 s1 x1 x2.(behind(e1,x2) & n_wall(x2) & a_blue(s1) & Theme(s1,x2) & Theme(e1,x1) & v_seat(e1) & 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))