Question: What was the nickname of the railroad executive that stayed at the Travelers Hotel?

Context paragraphs:
Rochester Travelers Hotel: Rochester Travelers Hotel, also known as the Colonial Motor Hotel and The Beverly, is an historic building at 426 Second Street, S.W. in Rochester, Minnesota, United States.  It is near the main campus of the Mayo Clinic, which owns the property.

James J. Hill: 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 W. Sprague: 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.

Travelers Hotel (Kirksville, Missouri): Travelers Hotel is a historic hotel located at Kirksville, Adair County, Missouri.  It was built in 1923-1924, and is a four-story, brick building that consists of two wings flanking a central core.  It has commercial storefronts on the first floor and features a centrally placed flat roof porch with Doric order piers and a wide metal cornice.

Renner, Indiana: 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.

Joseph P. Gaston: 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".

Travelers Hotel (Noonan, North Dakota): The Travelers Hotel on Main Street in Noonan, North Dakota, United States, is a hotel that was built in 1910.  Sharpshooter Annie Oakley and railroad executive James J. Hill have both stayed at the hotel.

Travelers Hotel: The Travelers Hotel, in East Liverpool, Ohio, was built in 1907 and had 105 rooms.  Located at 117 East Fourth Street, on the banks of the Ohio River, it is one of the few remaining river town hotels that faces the river.  The original name of the hotel is the Landora.

The Murray Hotel: The Murray Hotel, originally named the Elite Hotel, is an historic hotel in Livingston, Montana, United States.  The original two story hotel was built at the corner of Park and Second St. in 1904 by Josephine Kline to accommodate passengers from the Northern Pacific Railway.  The Elite was one of thirteen hotels built in downtown Livingston between 1884 and 1914 to service railroad travelers.  Its construction was financed by the family of a future U.S. Senator from Montana, James E. Murray.  The hotel's location opposite the Northern Pacific Railway's Livingston Depot made it a prime destination for railroad travelers.  The hotel is located within the Livingston Commercial District, a registered National Historic District.

Hotel Faust: The Faust Hotel, once known as the Travelers Hotel, was completed in 1929 and is located in New Braunfels, Texas.  The hotel planning was started by a group of citizens desiring to attract tourist and convention traffic to counter a downturn in agricultural business caused by a mid-1920s drought in the area.  Built on donated land from Senator Joseph Faust's estate, the hotel was renamed in 1936 in honor that family.  The building is a four-story masonry design of no particular architectural style, though with some Spanish Renaissance Revival detailing.

Supporting paragraphs: Travelers Hotel (Noonan, North Dakota) James J. Hill
Answer: The Empire Builder