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

Ex Input:
Sentence1: Congo 's many-sided war began in 1998 when Uganda and Rwanda invaded to back rebels fighting to topple the government in Kinshasa ., Sentence2: The Democratic Republic of Congo 's war began in 1998 when Uganda and Rwanda invaded together to back rebels trying to topple Kinshasa .

Ex Output:
Yes

Ex Input:
Sentence1: Although Prempro pills were used in the study , the researchers said they had no evidence that other brands were safer ., Sentence2: Athough Prempro pills were used in the study , the researchers say they have no evidence that other brands are safer .

Ex Output:
Yes

Ex Input:
Sentence1: PeopleSoft 's board now has 10 business days to evaluate the Oracle offer and make a recommendation to its shareholders ., Sentence2: Nevertheless , PeopleSoft must review Oracle 's tender offer and make a recommendation to shareholders .

Ex Output:
Yes