Question: Barry K. Sullivan's predecessor, Harroun, was appointed by which former American congressman who served as the 51st Speaker of the United States House of Representatives from 1999 to 2007?
Context: Edward Maurice "Ed" Mezvinsky ( ; born January 17, 1937) is a former American congressman and convicted felon.  A Democrat, he represented Iowa's 1st congressional district in the U.S. House of Representatives for two terms (1973–77). Anthony Francis Tauriello (August 14, 1899 – December 21, 1983) was an American congressman who represented the state of New York.  He was born in Buffalo, New York, USA on August 14, 1899 and graduated from the Cumberland School of Law in 1929.  He was a member of the Erie County Board of Supervisors from 1933 to 1937; also, he was a member of the Buffalo Common Council from 1938 to 1941, and again in 1948.  He served in the House of Representatives as a Democrat from January 3, 1949 to January 3, 1951.  After failing to be reelected in 1950 and 1952 he was again on the Buffalo Common Council from 1954 to 1957 and was appointed to the Buffalo Municipal Housing Authority from 1961 to 1973.  He died in Buffalo on December 21, 1983.  He is buried at United German and French Cemetery in Cheektowaga. The Floor Services Chief is the title of the staff member in the Speaker's or Majority Leader's office who runs the Majority cloakroom in the United States House of Representatives.  The current Floor Services Chief is Timothy J. Harroun, appointed by Republican Speaker John Boehner.  His predecessor is Barry K. Sullivan, who was appointed by Democratic Speaker Nancy Pelosi.  Sullivan's predecessor was Harroun, who was appointed by Republican Speaker Dennis Hastert.  When Harroun is Floor Services Chief, Sullivan is Minority Cloakroom Manager.  Similarly, when Sullivan was Floor Services Chief, Harroun was Minority Cloakroom Manager. Samuel Sullivan "Sunset" Cox (September 30, 1824, Zanesville, Ohio – September 10, 1889, New York City) was an American Congressman and diplomat.  He represented both Ohio and New York in the United States House of Representatives, and also served as United States Ambassador to the Ottoman Empire. Joseph Wellington Byrns Sr. (July 20, 1869 – June 4, 1936) was a U.S. politician.  He served as a 14-term Democratic Congressman from Tennessee, and as the 41st Speaker of the United States House of Representatives. Kevin Owen McCarthy (born January 26, 1965) is an American congressman from Bakersfield, California.  He serves in the United States House of Representatives for California's 23rd district and as the House Majority Leader.  A Republican, he was formerly chairman of the California Young Republicans and the Young Republican National Federation.  McCarthy worked as district director for U.S. Representative Bill Thomas, and in 2000 was elected as a trustee to the Kern Community College District.  He then served in the California State Assembly from 2002 to 2006, the last two years as minority leader.  When Thomas retired from the House of Representatives in 2006, McCarthy ran to succeed him and won the election.  The 23rd district, numbered as the 22nd District from 2007 to 2013, is based in Bakersfield and includes large sections of Kern and Tulare counties as well as part of the Quartz Hill neighborhood in northwest Los Angeles County. John Dennis Hastert ( ; born January 2, 1942) is a former American congressman who served as the 51st Speaker of the United States House of Representatives from 1999 to 2007, representing Illinois 's 14 congressional district from 1987 to 2007.  He is the longest-serving Republican Speaker of the House in history, and is the highest-ranking politician in U.S. history to have gone to prison. William Hayden English (August 27, 1822 – February 7, 1896) was an American congressman from Indiana and the Democratic nominee for vice president in 1880.  English entered politics at a young age, becoming a part of Jesse D. Bright's conservative faction of the Indiana Democratic Party.  After a few years in the federal bureaucracy in Washington beginning in 1845, he returned to Indiana and participated in the state constitutional convention of 1850.  He was elected to the state house of representatives in 1851 and served as its speaker at the age of twenty-nine.  After a two-year term in the state house, English represented Indiana in the federal House of Representatives for four terms from 1853 to 1861, working most notably to achieve a compromise on the admission of Kansas as a state. William G. Batchelder III (born December 19, 1942) was the 101st Speaker of the Ohio House of Representatives, serving from 2011 to 2014.  He also represented the 69th District of the Ohio House of Representatives from 2007 to 2014, and served in the House from 1969 to 1998 previously.  He is a Republican. United States House of Representatives Page Program was a program run by the United States House of Representatives, under the office of the Clerk of the House, in which voluntary appointed high school juniors applicants acted as non-partisan federal employees in the House of Representatives, providing supplemental administrative support to House operations in a variety of capacities in Washington, D.C., at the United States Capitol.  Pages reported to "Chief Pages", commonly referred to as work bosses (or "House Page Work Supervisors") on the Democratic and Republican sides of the House of Representatives Floor.  As was the practice in Middle Ages, pages were used as a messaging service for the four main House Office Buildings (Rayburn, Longworth, Cannon, and Ford) as well as inside the Capitol.  Other Page responsibilities included: taking statements from members of Congress after speeches (for the Congressional Record), printing and delivering vote reports to various offices, tending members' personal needs while on the floor of the House, managing phones in the cloakrooms, and ringing the bells for votes.  Pages were nominated by representatives based upon a highly competitive application process.  Congressional Pages had served within the U.S. House of Representatives for almost 180 years.
Answer: Dennis Hastert