instruction:
In this task, you're given a passage, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both passage and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the passage or linked information.
question:
Passage: Ellis was signed by the Leafs and played junior hockey with the Toronto Marlboros of the Ontario Hockey Association from 1961–1964. He played on the team that won the Memorial Cup in 1964. Ellis became a full-time Leaf in 1964–65 and played 11 seasons to 1974–75, winning the Stanley Cup in 1967. He was also a member of Team Canada at the 1972 Summit Series. Ellis retired at age 30 during training camp in 1975, coming off the most productive season of his career with 61 points. He said he no longer had the desire to play and denied that his decision had anything to do with being passed over as team captain in favour of Darryl Sittler a month earlier. In 1977, Ellis came out of retirement to play for Canada at the world hockey championships and then decided to resume his NHL career with the Leafs in 1977–78.
 Link Information: none Answer: none
answer:
Who won the Memorial Cup in 1963 before Ron Ellis won it?


question:
Passage: German Type IXD2 submarines were considerably larger than the original Type IXs. U-861 had a displacement of when at the surface and while submerged. The U-boat had a total length of , a pressure hull length of , a beam of , a height of , and a draught of . The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines plus two MWM RS34.5S six-cylinder four-stroke diesel engines for cruising, producing a total of for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of for use while submerged. She had two shafts and two propellers. The boat was capable of operating at depths of up to .
 Link Information: The range was extended to 31,500 nmi Answer: 7800
answer:
How much larger were the improved German submarines?


question:
Passage: Walsh first developed what would become the West Coast offense when he was offensive coordinator of the Cincinnati Bengals, working under legendary head coach Paul Brown. However, Walsh truly perfected this strategy as the head coach of the San Francisco 49ers. His teams were led by quarterback Joe Montana. Montana, who was noted for his ability to remain calm under pressure, also possessed good mobility and an accurate passing arm. Another important player in the 49ers offense was Roger Craig, a swift, speedy running back who could also catch passes out of the backfield and was a good receiver. Walsh's 49ers teams also featured several All-Pro wide receivers, including Dwight Clark, John Taylor, and Jerry Rice. The 49ers were one of the NFL's powerhouses in the 1980s and 1990s, under the guidance of head coaches Bill Walsh (1979–1988) and George Seifert (1989–1996). Walsh won three Super Bowls in the 1981, 1984 and 1988 seasons. Seifert won two Super Bowls in 1989 and 1994. Montana, Walsh and Rice are in the Pro Football Hall of Fame, and so is Montana's successor, quarterback Steve Young. Like Montana, Young was a great running quarterback and a very efficient passer. 
 Link Information: The team was led in its turnaround from late 1970s doormat by new owner Edward J. DeBartolo Jr. and head coach Bill Walsh. Answer: 18
answer:

How many years was Walsh the head coach of the team he went to after the Bengals?