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

Input: Consider Input: Sentence1: " I think we made some mistakes with this exam , and it 's up to us to identify and correct them , " Mills said ., Sentence2: Mills yesterday admitted , " We made some mistakes with this exam and it 's up to us to identify and correct them .

Output: Yes

Input: Consider Input: Sentence1: He said there were complex reasons for the increased numbers of cases and scientists were only just beginning to understand the risk factors ., Sentence2: However , he said , The reasons behind the increase in incidence are more complex and were just beginning to understand the risk factors .

Output: Yes

Input: Consider Input: Sentence1: But Secretary of State Colin Powell brushed off this possibility Wednesday ., Sentence2: Secretary of State Colin Powell last week ruled out a non-aggression treaty .
Output: Yes