premise: Jeb Bush is the older brother of George W. Bush.
hypothesis: George W. Bush . His brother , Jeb Bush , a former Governor of Florida , was a candidate for the Republican presidential nomination in the 2016 presidential election . Jeb Bush . Bush , who grew up in Houston , is the second son of former President George H. W. Bush and former First Lady Barbara Bush , and a younger brother of former President George W. Bush .