In this task, you're given a statement, 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'.

Context: the tropical storm as it moved generally northward, toward the Yucatán Channel Link Information: It is just over 200 km wide and nearly 2800 m deep at its deepest point near the coast of Cuba Question: What is the maximum width of the channel that the tropical storm moved northward toward?
Answer: 217 km

Context: Serra made one CART Champ Car start in 1985 at the Portland International Raceway for Ensign Racing but suffered an engine failure. Link Information: Ensign entered Formula One in , with backing from pay driver, Rikky von Opel. Von Opel had driven for the team in Formula Three in 1972 and won the Lombard North Central, British Formula Three Championship that year. Based upon that success, von Opel commissioned a Formula One chassis. Their first season was not successful, von Opel only finished two races and the team's best result that season was 13th at the 1973 British Grand Prix. Question: How long had Ensign Racing been in business when Serra made one CART Champ Car start at the Portland International Raceway?
Answer: 12

Context: in 1980 he became a member of the National Academic Opera and Ballet Theatre of the Republic of Belarus Link Information: The National Academic Grand Opera and Ballet Theatre of the Republic of Belarus () is located in a park in the Trinity Hill district of Minsk. Local people call it the "Opierny Teatr" (Belarusian) or the "Opera and Ballet Theatre". It opened on 15 May 1933 Question: How many years after its founding did Polozov join the theatre in Belarus?

Answer: 47