<prompt> Translate the following text to EnglishMonica alitumia nguo hiyo kama chombo cha biashara ili kuhakikisha kwamba hakuwa na hatia yoyote, ingawa alijua kwamba haikuwa na kitu chochote.  <response>: Monica then used the dress as a bargaining chip to guarantee her full immunity, even though she knew there was nothing on it. 