    Sentence I: The U.S. government and  private technology experts warned  Wednesday that hackers plan to attack  thousands of Web sites Sunday in a  loosely co-ordinated * contest * that  could disrupt Internet traffic    Sentence 2: THE US government and  private technology” experts have  warned that. hackers plan to attack  thousands of websites on Sunday in a  loosely co-ordinated * contest * that  could disrupt Internet traffic