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  _____    __   __   _    _      ___      _  __  
 |__  //   \ \\/ // | || | ||   / _ \\   | |/ // 
   / //     \ ` //  | || | ||  / //\ \\  | ' //  
  / //__     | ||   | \\_/ || |  ___  || | . \\  
 /_____||    |_||    \____//  |_||  |_|| |_|\_\\ 
 `-----`     `-`'     `---`   `-`   `-`  `-` --`

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發送短信 : Generating semantically similar permutations of questions by clustering