Problem: San Diego:

From the start of the 20th century through the 1970s, the American tuna fishing fleet and tuna canning industry were based in San Diego, "the tuna capital of the world". San Diego's first tuna cannery was founded in 1911, and by the mid-1930s the canneries employed more than 1,000 people. A large fishing fleet supported the canneries, mostly staffed by immigrant fishermen from Japan, and later from the Portuguese Azores and Italy whose influence is still felt in neighborhoods like Little Italy and Point Loma. Due to rising costs and foreign competition, the last of the canneries closed in the early 1980s.

Why were the canneries ultimately closed by the early 1970s?
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A: unanswerable

Problem: The Direccion Nacional de Transporte (DNT), part of the national Ministry of Transport and Public Works, is responsible for the organization and development of Montevideo's transport infrastructure. A bus service network covers the entire city. An international bus station, the Tres Cruces Bus Terminal, is located on the lower level of the Tres Cruces Shopping Center, on the side of Artigas Boulevard. This terminal, along with the Baltazar Brum Bus Terminal (or Rio Branco Terminal) by the Port of Montevideo, handles the long distance and intercity bus routes connecting to destinations within Uruguay.
Where is the Tres Cruces Bus Terminal located?
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Answer: the lower level of the Tres Cruces Shopping Center

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
A fleet carrier is intended to operate with the main fleet and usually provides an offensive capability. These are the largest carriers capable of fast speeds. By comparison, escort carriers were developed to provide defense for convoys of ships. They were smaller and slower with lower numbers of aircraft carried. Most were built from mercantile hulls or, in the case of merchant aircraft carriers, were bulk cargo ships with a flight deck added on top. Light aircraft carriers were carriers that were fast enough to operate with the fleet but of smaller size with reduced aircraft capacity. Soviet aircraft carriers now in use by Russia are actually called heavy aviation cruisers, these ships while sized in the range of large fleet carriers were designed to deploy alone or with escorts and provide both strong defensive weaponry and heavy offensive missiles equivalent to a guided missile cruiser in addition to supporting fighters and helicopters.
What capability does a fleet carrier offer?
A: offensive

Context and question: The great Navicella mosaic (13051313) in the atrium of the Old St. Peter's is attributed to Giotto di Bondone. The giant mosaic, commissioned by Cardinal Jacopo Stefaneschi, was originally situated on the eastern porch of the old basilica and occupied the whole wall above the entrance arcade facing the courtyard. It depicted St. Peter walking on the waters. This extraordinary work was mainly destroyed during the construction of the new St. Peter's in the 17th century. Navicella means "little ship" referring to the large boat which dominated the scene, and whose sail, filled by the storm, loomed over the horizon. Such a natural representation of a seascape was known only from ancient works of art.
Navicella means what in Italian?
Answer: "little ship"

Question: Arsenal's tally of 13 League Championships is the third highest in English football, after Manchester United (20) and Liverpool (18), and they were the first club to reach 8 League Championships. They hold the highest number of FA Cup trophies, 12. The club is one of only six clubs to have won the FA Cup twice in succession, in 2002 and 2003, and 2014 and 2015. Arsenal have achieved three League and FA Cup "Doubles" (in 1971, 1998 and 2002), a feat only previously achieved by Manchester United (in 1994, 1996 and 1999). They were the first side in English football to complete the FA Cup and League Cup double, in 1993. Arsenal were also the first London club to reach the final of the UEFA Champions League, in 2006, losing the final 21 to Barcelona.
Is there an answer to this question: Where does Arsenal's total League Championships place it as compared to other English teams?

Answer: third highest

Question: Shorter, black-and-white daily strips began to appear early in the 20th century, and became established in newspapers after the success in 1907 of Bud Fisher's Mutt and Jeff. Humour strips predominated at first, and in the 1920s and 1930s strips with continuing stories in genres such as adventure and drama also became popular. Thin periodicals called comic books appeared in the 1930s, at first reprinting newspaper comic strips; by the end of the decade, original content began to dominate. The success in 1938 of Action Comics and its lead hero Superman marked the beginning of the Golden Age of Comic Books, in which the superhero genre was prominent.
Is there an answer to this question: When did Mutt and Jeff end?

Answer:
unanswerable