You are given two sentences(Sentence1 and Sentence2). Answer "Yes" if these sentences are a paraphrase of one another, otherwise answer "No".
Example: Sentence1: While it was being called mandatory , Dupont said authorities were not forcing people from their homes ., Sentence2: It was called mandatory , but Dupont said authorities did not force people to leave .
Example solution: Yes
Example explanation: These sentences have the meaning. So, the output should be "Yes".

Problem: Sentence1: Sobig.F became one of the most widespread viruses ever , crippling corporate e-mail networks and filling home users ' inboxes with a glut of messages ., Sentence2: Since surfacing late Monday , Sobig.F has been crippling corporate e-mail networks and filling home users ' inboxes with a glut of messages .
Solution: Yes