Context and question: The Seahawks' CenturyLink Field has hosted NFL playoff games in 2006, 2008, 2011, 2014 and 2015. The Seahawks have advanced to the Super Bowl three times: 2005, 2013 and 2014. They defeated the Denver Broncos 43-8 to win their first Super Bowl championship in Super Bowl XLVIII, but lost 24-28 against the New England Patriots in Super Bowl XLIX. Seattle Sounders FC has played in Major League Soccer since 2009, sharing CenturyLink Field with the Seahawks, as a continuation of earlier teams in the lower divisions of American soccer. The Sounders have not won the MLS Cup but have, however, won the MLS Supporters' Shield in 2014 and the Lamar Hunt U.S. Open Cup on four occasions: 2009, 2010, 2011, and 2014.
What is the Seattle soccer club named?
Answer: Seattle Sounders FC
Context and question: Whitehead and Russell had thought originally that Principia Mathematica would take a year to complete; it ended up taking them ten years. To add insult to injury, when it came time for publication, the three-volume work was so massive (more than 2,000 pages) and its audience so narrow (professional mathematicians) that it was initially published at a loss of 600 pounds, 300 of which was paid by Cambridge University Press, 200 by the Royal Society of London, and 50 apiece by Whitehead and Russell themselves. Despite the initial loss, today there is likely no major academic library in the world which does not hold a copy of Principia Mathematica.
How long did it actually take to complete Principia Mathematica? 
Answer: ten years
Context and question: The Northwestern library system consists of four libraries on the Evanston campus including the present main library, University Library and the original library building, Deering Library; three libraries on the Chicago campus; and the library affiliated with Garrett-Evangelical Theological Seminary. The University Library contains over 4.9 million volumes, 4.6 million microforms, and almost 99,000 periodicals making it (by volume) the 30th-largest university library in North America and the 10th-largest library among private universities. Notable collections in the library system include the Melville J. Herskovits Library of African Studies, the largest Africana collection in the world, an extensive collection of early edition printed music and manuscripts as well as late-modern works, and an art collection noted for its 19th and 20th-century Western art and architecture periodicals. The library system participates with 15 other universities in digitizing its collections as a part of the Google Book Search project. The Mary and Leigh Block Museum of Art is a major art museum in Chicago, containing more than 4,000 works in its permanent collection as well as dedicating a third of its space to temporary and traveling exhibitions.
How many volumes does the College Library contain?
Answer:
unanswerable