TASK DEFINITION: You are given two sentences(Sentence1 and Sentence2). Answer "Yes" if these sentences are a paraphrase of one another, otherwise answer "No".
PROBLEM: Sentence1: 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 ., Sentence2: 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 .

SOLUTION: Yes

PROBLEM: Sentence1: SEA 05D is the Naval Sea Systems Command ’ s technical authority for surface ship design and engineering ., Sentence2: The Future Concepts and Surface Ship Design Group is the Naval Sea Systems Command ’ s technical authority for all surface ship design and engineering .

SOLUTION: Yes

PROBLEM: Sentence1: Lord Falconer hailed the changes as " a new beginning as far as the courts , Crown Prosecution Service and police are concerned " ., Sentence2: " It 's a new beginning as far as the courts , Crown Prosecution Service and police are concerned , making the criminal justice system work better . "

SOLUTION:
No