Sisymbrium altissimum is a species of "Sisymbrium".
 The plant is native to the western part of the Mediterranean Basin in Europe and Northern Africa and is widely naturalized throughout most of the world, including all of North America.
 It was probably introduced into North America by a contaminant crop seed.
 The plant grows in soils of all textures, even sand.
 The plant germinates in winter or early spring.
 The blooming time is lengthy, and after maturity the plant forms a tumbleweed.
 Common names of the plant include Jim Hill mustard, after James J. Hill, a Canadian-American railroad magnate, tall tumblemustard, tall mustard, tumble mustard, tumbleweed mustard, tall sisymbrium, and tall hedge mustard.
Joseph P. Gaston (November 14, 1833July 20, 1913) was an American railroad executive, journalist, and historian based in Oregon.
 He is remembered as the namesake of Gaston, Oregon, the Joseph Gaston House, and the Gaston-Strong House.
 Gaston was the first president of the Oregon Central Railroad and an outspoken opponent of railroad executive Ben Holladay.
 He authored the three-volume "Portland, Oregon, Its History and Builders" and the four-volume "The Centennial History of Oregon, 1811 to 1911".
Leonard H. Murray (1913 – November 20, 2001) was an American railroad executive.
 A graduate of the University of Minnesota Law School, Murray served as President of the Soo Line Railroad for 17 years.
 His careful management enabled the Soo to survive in difficult times.
 He also practiced law in Minnesota and served as President of the Duluth, South Shore, and Atlantic Railroad for a time.
Samuel R. Callaway (December 24, 1850 – June 1, 1904) was an American railroad executive.
 He served as president of Chicago and Western Indiana Railroad and Belt Line, second vice president and general manager of Union Pacific Railroad 1884-1887, president of Toledo, St. Louis and Kansas City Railroad 1887-1895, president of Nickel Plate Road 1895-1897, president of Lake Shore and Michigan Southern Railroad 1897-1898, president of New York Central Railroad 1898-1901 and as president of American Locomotive Company 1901-1904.
Renner is an extinct American village in Indiana's Blackford County.
 Although Renner has been listed as a “populated place” by the U.S. Geological Survey, this description is misleading.
 Renner was a railroad stop on the Pittsburgh, Cincinnati and St. Louis Railroad.
 The land around the railroad stop was originally used to supply timber for railroad crossties, and eventually became a livestock farm.
 Housing for the families of the employees of the livestock farm was also located nearby.
 Although it is not known for certain, Renner is thought to have been named for railroad executive John W. Renner.
 Renner was an executive of the Pittsburgh, Cincinnati and St. Louis Railroad, and later the Pennsylvania Railroad, and retired with over 50 years of railroad experience.
 Another community, Rennerdale, Pennsylvania, was named in his honor in 1895.
Harold William Burtness (November 16, 1897 – May 1978) was an American railroad executive.
 He began his career as a secretary for the Chicago, Milwaukee, St. Paul and Pacific Railroad and moved into an executive position with the Pennsylvania Railroad before coming to the Chicago Great Western Railway in 1922.
 He was elected to a vice-presidency of the CGW in 1941 and took over the presidency of the railroad in 1946.
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Benjamin W. Heineman (February 10, 1914 – August 5, 2012) was an attorney and American railroad executive.
 Heineman first attended the University of Michigan (1930-1933), and later attended Northwestern's school of law.
 He first gained attention in the railroad industry in 1954, when he orchestrated a successful proxy battle for control of the Minneapolis and St. Louis Railway.
 He became president of the Chicago and North Western Railway (CNW) in 1956, leading the railroad through a series of difficult cost-cutting measures that returned the railroad to solvency.
 One of the measures he instituted was to sell shares in the railroad to the railroad's own employees, prompting the "Employee Owned" inscription in the railroad's logo.
 This process was consummated in 1972, at which time Larry Provo succeeded Heineman as president of the company.
SS "Minnesota was an American built ocean-liner operated by the Great Northern Steamship Company which was owned by James J. Hill.
 She was an identical sister ship to the  which sank in Japan in 1907.
 Both ships built in 1903 were the largest and most luxurious liners built in the United States at the opening of the 20th century.
 Shortly after WW1 she was operated by the US Navy as USS "Troy" as a troop ship.
James Jerome Hill (September 16, 1838 – May 29, 1916), was a Canadian-American railroad executive.
 He was the chief executive officer of a family of lines headed by the Great Northern Railway, which served a substantial area of the Upper Midwest, the northern Great Plains, and Pacific Northwest.
 Because of the size of this region and the economic dominance exerted by the Hill lines, Hill became known during his lifetime as "The Empire Builder."
John Wilson Sprague (April 4, 1817 – December 27, 1894) was an American soldier and railroad executive.
 He served as a general in the Union Army in the Western Theater of operations during the American Civil War.
 He received the Medal of Honor for gallantry at the Battle of Decatur during the Atlanta Campaign.
 After the war, he was a railroad executive and later co-founded the city of Tacoma, Washington, serving as its first mayor.

Question: The ocean-liner the SS Minnesota was owned by Canadian-American railroad executive who became known as what during his lifetime?
Answer: "The Empire Builder."