Question: In what Minnesota county was Jeff Nielsen born?

Context paragraphs:
Jeff Nielsen: Jeffrey Michael Nielsen (born September 20, 1971 in Grand Rapids, Minnesota) is a retired American professional ice hockey player who played in the NHL with the New York Rangers, Anaheim Mighty Ducks, and Minnesota Wild.  He is the older brother of Kirk Nielsen.

Kirk Nielsen: Kirk G. Nielsen (born October 19, 1973) is a retired American professional ice hockey player.  He played 6 games in the NHL with the Boston Bruins during the 1997–98 season.  He is the younger brother of Jeff Nielsen.

Frank Clague: Frank Andrew Clague (July 13, 1865 – March 25, 1952) was a U.S. Representative from Minnesota.  He was born in Warrensville, Cuyahoga County, Ohio; attended the common schools; moved to Minnesota in 1881; attended the State normal school at Mankato 1882 – 1885; taught school at Springfield, Minnesota, 1886 – 1890; studied law; was admitted to the bar in 1891 and commenced practice in Lamberton, Redwood County, Minnesota, the same year; prosecuting attorney of Redwood County, Minnesota, 1895 – 1903; member of the Minnesota House of Representatives from January 1, 1903, to January 1, 1907, serving as speaker in the 1905 session; served in the Minnesota Senate from January 1, 1907, to December 31, 1915; judge of the ninth judicial district of Minnesota from January 1, 1919, to March 1, 1920, when he resigned; elected as a Republican to the 67th, 68th, 69th, 70th, 71st, and 72nd congresses, (March 4, 1921 – March 3, 1933); was not a candidate for renomination in 1932; resumed the practice of law and also engaged in agricultural pursuits until his retirement; died in Redwood Falls, Minnesota, March 25, 1952; interment in Redwood Falls Cemetery.

Jeff Johnson (Minnesota politician): Jeff Johnson (born November 11, 1966) is an American politician from Minnesota.  He was the 2014 Republican nominee for governor and was elected to the Minnesota House of Representatives in 2000 and served from 2001 until 2007.  He left office to run unsuccessfully for state attorney general in 2006.  Now the Hennepin County commissioner for the 7th district, he was elected as the national Committeeman from Minnesota in April 2011.

Jim Nielsen: James Wiley Nielsen (born July 31, 1944 in Fresno, California) is an American politician from California currently serving in the California State Senate representing the 4th district.  He is a Republican.  Nielsen served on the Yolo County Republican Committee before winning election to the California State Senate in 1978.  Nielsen also served in the California State Assembly.

Svend Nielsen (architect and engineer): Svend Nielsen (1919–2013) was a Danish born architect and architectural engineer.  Nielsen with his partner, Carl Johnson, founded the firm Johnson and Nielsen.  Nielsen was influential in the construction of many important structures in Southern California, including the Discovery Cube in Orange County, the Coussoulis Arena in San Bernardino (notable for its "spider-like" exterior frame work) and, most famously, the Forum in Inglewood, CA, which was the first structure of its kind to be built without support pillars.  The engineering of the Forum was quite a feat as the structural design allowed no obstructed seats in the entire arena.

Grand Rapids, Minnesota: Grand Rapids is a city in Itasca County, Minnesota, United States.  The population was 10,869 at the 2010 census.  It is the county seat of Itasca County.

Mogens Dahl Nielsen: Mogens Dahl Nielsen (born 12 May 1972) is a former Danish cricketer.  Nielsen was a right-handed batsman who bowled leg break.  He was born at Nykøbing Mors, Viborg County.

George Ross Smith: George Ross Smith (May 28, 1864 – November 7, 1952) was a U.S. Representative from Minnesota; born in St. Cloud, Stearns County, Minnesota; attended the public schools and Sauk Centre (Minnesota) Academy; was graduated from the law school of the University of Minnesota at Minneapolis in 1893; was admitted to the bar in 1893 and commenced practice in Minneapolis; member of the Minnesota House of Representatives in 1903; judge of the probate court of Hennepin County, Minnesota, 1907 – 1913; elected as a Republican to the Sixty-third and Sixty-fourth Congresses (March 4, 1913 – March 3, 1917); unsuccessful candidate for reelection in 1916 to the Sixty-fifth Congress; resumed the practice of law and taught law classes at Minneapolis-Minnesota Law School; died in Minneapolis, Minnesota, November 7, 1952; interment in St. Mary's Cemetery.

Henry Poehler: Henry Poehler, (August 22, 1833 – July 18, 1912, was Representative from Minnesota; born in Hiddesen, Lippe-Detmold, Germany (now a part of Detmold); attended his father’s academy; immigrated to the United States in April 1848 and settled in Burlington, Iowa, where he attended the public schools; moved to St. Paul, Minnesota, in 1853 and to Henderson, Sibley County, Minnesota, in 1854; engaged in general merchandising and as a grain merchant; appointed postmaster at Henderson, Minnesota, February 25, 1856, and served until April 12, 1861; served in the state house of representatives in 1857, 1858, and 1865; county commissioner of Sibley County and chairman of the board from January 1865 to January 1868; member of the state senate in 1872 and 1873 and again in 1876 and 1877; elected as a Democrat to the Forty-sixth Congress (March 4, 1879 – March 3, 1881); unsuccessful candidate for reelection in 1880 to the Forty-seventh Congress; unsuccessful candidate for Minnesota State Treasurer; served as mayor of Henderson for several terms; moved to Minneapolis in 1889 and engaged in the general merchandise and grain business; moved to Los Angeles, California, in 1895; died in Henderson, Minnesota, while on a visit; interment in Major James R. Browne’s Cemetery.

Supporting paragraphs: Jeff Nielsen Grand Rapids, Minnesota
Answer: Itasca County