instruction:
In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
question:
Passage: By the 1920s, SCGX was doubling annually and had emerged as the "fastest growing grain market in the world"; transacting 22 million bushels in 1928 (valued at $336 million in 2018), resulting from its location in the heart of the Corn Belt and self-imposed standards before the Grain Standards Act of 1916 including species admittance and non-mixing. However, its growth was limited by shipping rates. With the trucking industry and Interstate Highway System not yet developed, SCGX was constrained by monopolized railroad rates, primarily by the Great Northern Railway. Exhausting their bargaining power with the Interstate Commerce Commission, SCGX President Charles C. Flanley directed future lobbying efforts to unlocking barge navigation of the Missouri River. His initiative was stalled throughout the 1930s by the Great Depression and Dust Bowl. In 1938, a renewed thirteen year campaign led by Secretary William Henry Marriott finally opened commercial navigation of the Missouri River and helped establish the Missouri River Basin Project, which included development of the Gavins Point Dam. The alternate transportation succeeded in breaking the railroad's monopoly. By the 1970s, SCGX was among the largest exchanges in the world; transacting over 100 million bushels annually (valued at $1 billion as of 2018).
 Link Information: The dam and hydroelectric power plant were constructed as the Gavins Point Project from 1952 to 1957 by the United States Army Corps of Engineers as part of the Pick-Sloan Plan Question: When was the dam that was part of the Missouri River Basin Project completed?
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Answer: 1957


question:
Passage: Duncan was born in Lebanon, Tennessee. His "paternal grandparents were small-areage farmers in Scott County, which in 1861 left Tennessee, refusing to follow the Volunteer State into the Confederacy, and declared itself 'the Free and Independent state of Scott.'" Duncan's parents were Lois (Swisher) and John Duncan Sr., who "hitchhiked into Knoxville with five dollars in his pocket,' and after an education at the University of Tennessee was elected mayor of Knoxville and then congressman." The elder Duncan was also a co-owner of the Knoxville Smokies of the "Sally League," for which his son "was a batboy, a ball shagger, scoreboard operator, and, as a freshman at the University of Tennessee, the Smokies' public-address announcer." Duncan also worked as a grocery bagger and salesman at Sears while working his way through school. Duncan supported Barry Goldwater's 1964 presidential campaign, and sent the first paycheck he earned as a bagboy at the local A&P to the Goldwater campaign.
 Link Information: none Question: How far is Knoxville from where Jimmy Duncan was born?
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Answer: none


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Passage: Marie-Félix Blanc was born on 22 December 1859 in Paris to French businessman François Blanc and his second wife, Marie Charlotte Hensel. Her father was the founder of the Société des bains de mer de Monaco and operated multiple casinos, including the Casino de Monte-Carlo in Monaco and the Bad Homburg vor der Höhe Casino in Germany. Her godfather, Count Antoine Bertora, was rumored to be her biological father. She had an older sister, Louise; an older brother, Edmond; and two older half-brothers from her father's first marriage to Madeleine-Victoire Huguelin, Camille and Charles. Her older sister later married Prince Constantine Wincenty Maria Radziwiłł. Her older brother later served as the mayor of La Celle-Saint-Cloud and her older half brother, Camille, served as mayor of Beausoleil. When she was 18 years old, Blanc's father died, leaving her a vast inheritance.
 Link Information: François Blanc (; 12 December 1806 Question: What was the age difference between Marie-Félix Blanc's parents?
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Answer: 27