Question: Who is an American politician, a member of the Republican Party and represented Ohio's 8th district?

full_context: Document 1: Robert A. Taft: Robert Alphonso Taft Sr. (September 8, 1889 – July 31, 1953) was an American conservative politician, lawyer, and scion of the Taft family. A member of the Republican Party, he represented Ohio in the United States Senate and briefly served as Senate Majority Leader.
Document 2: Wisconsin's 8th congressional district: Wisconsin's 8th congressional district is a congressional district of the United States House of Representatives in northeastern Wisconsin. The district includes Green Bay and Appleton. It is currently represented by Mike Gallagher, a Republican. Gallagher won the open seat vacated by Reid Ribble. It is also one of two Congressional Districts to ever elect a Catholic Priest, Robert John Cornell.
Document 3: John Kasich: John Richard Kasich ( ; born May 13, 1952) is an American politician, former television host, and the 69th and current Governor of Ohio. First elected in 2010 and re-elected in 2014, Kasich is a member of the Republican Party. His second term ends on January 14, 2019; he cannot stand for reelection due to term limits.
Document 4: George Distel: George Distel is a former member of the Ohio House of Representatives, representing the 99th District from 1999-2008. He was the Administrator of the Ohio Turnpike Commission. Executive Director George Distel, 58, of Conneaut, submitted his resignation to the commission board, effective April 1, 2011. Distel, a former Democratic member of the Ohio House, took the job in April 2008 under former Gov. Ted Strickland, a Democrat. Distel said he was not asked to leave. Nor did he ask the Kasich camp if he could stay on. He said he would stay for several months if needed "for a smooth transition." "In the end, I'm ready to retire," the former Ashtabula County commissioner said Friday from his home in Conneaut. "I've been away from home for a long time. I spent nine years in the legislature, three at the turnpike. I'm tired of packing a suitcase." Distel said he would often bunk at his son's home in Strongsville, rather than make the trek from turnpike headquarters in Berea to Conneaut. Distel earned $132,500 last year, along with a $6,000 car allowance.
Document 5: John Boehner: John Andrew Boehner ( ; born November 17 , 1949) is an American politician who served as the 53rd Speaker of the United States House of Representatives from 2011 to 2015. A member of the Republican Party, Boehner was the U.S. Representative from Ohio 's 8 congressional district , serving from 1991 to 2015. The district included several rural and suburban areas near Cincinnati and Dayton.
Document 6: Energy in Ohio: The energy sector of Ohio consists of thousands of companies and cities representing the oil, natural gas, coal, solar, wind energy, fuel cell, biofuel, geothermal, hydroelectric, and other related industries. Oil and natural gas accounts for $3.1 billion annually in sales while ethanol generates $750 million. The state is #2 nationally in solar manufacturing as Toledo is considered a national solar hub, nicknamed "Solar Valley". It is recognized internationally as the "Fuel Cell Corridor", and Hamilton is poised to become the biggest municipal provider of renewable energy in the Midwest, and one of the largest in the country, with over 70%. In 2008, the state led the country in alternative energy manufacturing according to Site Selection Magazine, while the natural gas industry has experienced growth due to the Great Shale Gas Rush.
Document 7: Newt Gingrich: Newton Leroy Gingrich ( ; born Newton Leroy McPherson; June 17, 1943) is an American politician and author from the state of Georgia who served as the 50th Speaker of the United States House of Representatives from 1995 to 1999. He represented Georgia's 6th congressional district as a Republican from 1979 until his resignation in 1999. In 2012, Gingrich was a candidate for the Republican Party presidential nomination.
Document 8: Joe Barton: Joe Linus Barton (born September 15, 1949) is a Republican politician, representing  's 6 congressional district () in the U.S. House of Representatives since 1985, and a member of the Tea Party Caucus. The district includes Arlington, part of Fort Worth, and several small towns and rural areas south of the Dallas–Fort Worth Metroplex. Following the 2014 primary defeat of Ralph Hall, Barton became the dean of the Texas congressional delegation. Barton came to national prominence after telling a citizen at a town hall meeting to "shut up", although the citizen later claimed he deserved it.
Document 9: Ohio's 13th congressional district: The 13th congressional district of Ohio is represented by Representative Tim Ryan, who defeated Republican Dr. Marisha Agana of Warren on November 6, 2012. Due to reapportionment following the 2010 United States Census, Ohio lost its 17th and 18th congressional districts, necessitating redrawing of district lines. Following the 2012 elections, the 13th district changed to take in much of the territory in the current 17th district, including the city of Youngstown and areas east of Akron.
Document 10: Political positions of Paul Ryan: The political positions of Paul Ryan, since 1999 the U.S. Representative from Wisconsin's 1st congressional district and currently the 54th Speaker of the United States House of Representatives, are generally conservative, with a focus on fiscal policy. Ryan was Chairman of the House Budget Committee from 2011 to 2015 and of Ways and Means in 2015. Ryan was the Republican nominee for Vice President as the running mate of Mitt Romney in the 2012 presidential election.
Document 11: Rick Nolan: Richard Michael Nolan (born December 17, 1943) is an American politician and member of the Minnesota Democratic–Farmer–Labor Party who has been the U.S. Representative for Minnesota's 8th congressional district since 2013 and previously served as the U.S. Representative for Minnesota's 6th congressional district from 1975 to 1981.
Document 12: Ohio's 8th congressional district: Ohio's 8th congressional district sits on the west side of Ohio, bordering Indiana. The cities of Hamilton, Fairfield, Middletown, Springfield, Eaton, Greenville, Piqua, and Troy are part of the district. The district was represented by Republican John Boehner, the 53rd Speaker of the United States House of Representatives. On September 25, 2015, Boehner announced his resignation from the speakership and retirement from Congress, which became effective on October 31, 2015.
Document 13: Ohio's 1st senatorial district: Ohio's 1st senatorial district has historically represented areas located in northwestern Ohio. A multi-county district, it currently comprises the counties Hancock, Hardin, Putnam, Henry, Williams, Defiance, Paulding, and Van Wert and portions of the counties Fulton, Logan, and Auglaize. It encompasses Ohio House districts 81, 82 and 83. It has a Cook PVI of R+11. Its current Ohio Senator is Republican Cliff Hite. He resides in Findlay, a city located in Hancock County.
Document 14: Paul Ryan: Paul Davis Ryan Jr. ( ; born January 29, 1970) is an American politician who is the 54th and current Speaker of the United States House of Representatives. He was the Republican Party nominee for Vice President of the United States, running alongside former Governor Mitt Romney of Massachusetts, in the 2012 election.
Document 15: John Conyers: John James Conyers Jr. (born May 16, 1929) is an American Democratic politician and the U.S. Representative for  's 13th congressional district . The district includes the western half of Detroit, as well as River Rouge, Ecorse, Redford Township, Dearborn Heights, Highland Park, Westland, Garden City, Inkster, Wayne, and Romulus. As the longest-serving active Representative, he is the Dean of the House of Representatives.
ground_truth: John Boehner