Individual #United_States_Senate__Senate  the upper house of the United States Congress
  instance of:  senate
  member of:  United_States_Congress__Congress  the legislature of the United States government
     member of:  legislative_branch__legislativebranch  the branch of the United States government that has the power of legislating
        member of:  United_States_government__United_States__U.S._government__U.S.  the executive and legislative and judicial branches of the federal government of the United States

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