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

Example Input: Sentence1: U.S. corporate bond yield spreads tightened in spotty trading on Friday as Wall Street labored to get back on its feet after the largest power outage ever in North America ., Sentence2: U.S. stocks rose slightly on feather-light volume on Friday , as Wall Street regrouped after the biggest-ever power outage in North America .
Example Output: Yes

Example Input: Sentence1: We don 't know if any will be SARS , " said Dr. James Young , Ontario 's commissioner of public safety ., Sentence2: " We 're being hyper-vigilant , " said Dr. James Young , Ontario 's commissioner of public safety .
Example Output: No

Example Input: Sentence1: First , it 's found in most versions of Windows , including the new Windows Server 2003 ., Sentence2: It is the first " critical " flaw discovered and fixed in the new Windows Server 2003 .
Example Output:
No