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?
answer:
Answer: 1957


question:
Passage: Duan Ju was born in Tianjin. At the age of 17, he was called up to China youth football team. Duan Ju played for Tianjin football Team 2 from 1980 to 1983. From 1984 to 1991, Duan Ju played for Tianjin. In 1988, Duan Ju played for China in the 1988 Asian Cup and football match at the 1988 Olympic Games. In 1990, China lost to Thailand in football match at the 1990 Asian Games. The coach of China, Gao Fengwen quit office， then Duan Ju quit the China national team and returned to Tianjin. in 1992, Duan Ju had gone to Japan and played for NKK SC. In 1993, Duan Ju retired in Japan and returned to China. In 1995, Duan Ju played for Tianjin Yuancheng football club, in the same year， Duan Ju retired again.
 Link Information: none Question: What coach did Duan Ju play for on the Japanese team?
answer:
Answer: none


question:
Passage: Olson made one CART World Series start in 1983 at Road America. In 1984 he drove in three Can-Am races, an IMSA GT Championship race and two World Endurance Championship races, including the 1984 24 Hours of Le Mans where he was caught up in the debris field of his Aston Martin teammate John Sheldon's crash that killed a track worker. In 1985 he won three races with Dyson Racing in IMSA Camel GTP, the team's first, in a Porsche 962. 1986 saw Olson continue in IMSA GTP with Dyson and Preston Henn fielding his entries. That year he also competed in the 1986 24 Hours of Le Mans, co-driving a Rothmans Porsche factory 962 with Vern Schuppan. Olson was away from racing after that until 1989 when he returned with the All American Racers Toyota 88C factory team in IMSA GTP. He won two poles and finished ninth in points. 1990 would be his final year of professional racing as he finished tenth in GTP points with three poles for All American Racers in their Eagle HF89.
 Link Information: 1986 Question: How hold was his co-driver when he was in a porsche?
answer:

Answer: 43