premise: Beijing unveiled a set of five doll mascots for the 2008 Olympic Games Friday evening, exactly 1,000 days before the event's opening ceremony.
  The long-anticipated mascots, which embody the natural characteristics of four of China's popular animals -- the Fish, the Panda, the Tibetan Antelope, the Swallow -- and the Olympic Flame, were presented at a grand televised ceremony inside the Workers' Gymnasium.
  It is the first time more than three images share Summer Olympic mascot duty.
  
  The 2000 Sydney Games featured three animal mascots -- Olly the Kookaburra, Syd the Platypus and Millie the Spiny Anteater.
  "We decided to produce five mascots instead of one, because we think no single figure can embody China's profound and diversified culture," said Han Meilin, chief of the mascot designers' group.
   What does the mascots being unveiled refer to?
hypothesis: no single figure can embody China's profound and diversified culture