instruction:
In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as 'a' for Yes or 'b' for No.
question:
Question: What city the place in that Morrey was employed as a mathematician during World War II? Passage:Morrey graduated from Ohio State University with a B.A. in 1927 and a M.A. in 1928, and then studied at Harvard University under the supervision of George Birkhoff, obtaining a Ph.D. in 1931 with a thesis entitled Invariant functions of Conservative Surface Transformations. After being awarded his Ph.D, he was a National Research Council Fellow at Princeton, at the Rice Institute and finally at the University of Chicago. He became a professor of mathematics at UC Berkeley in 1933, hired by Griffith Conrad Evans, and was a faculty member until his retirement in 1973. In Berkeley, he was early given several administrative duties, for example being the Chairman of the Department of Mathematics during the period 19491954, and being the Acting Chairman, the Vice Chairman and the Director of the Institute of Pure and Applied Mathematics at various times. During the years 19371938 and 19541955 he was a member of the Institute for Advanced Studies: he was also Visiting Assistant Professor at Northwestern University, Visiting Professor at the University of Chicago and Miller Research Professor at Berkeley. During World War II he was employed as a mathematician at the U.S. Ballistic Research Laboratory in Maryland.

answer:
b

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Question: How many different charts was piece by piece on at the same time in 2016? Passage:"Piece by Piece" made its debut chart appearance on the Billboard Adult Top 40 chart on the chart week ending December 19, 2015. It attained a peak position of number 32 and stayed on the chart for nine weeks. Following Clarkson's performance of the song on American Idol, Nielsen Soundscan announced that digital copies of the song had sold a total of 21,996 copies a few hours prior to the end of the tracking week ending on February 25, 2016, posting a 4777% gain from its previous week and allowing it to debut on the Billboard Digital Songs chart at number 35 and at number 18 on the Billboard Bubbling Under Hot 100 Singles chart in the issue dated the week ending March 12, 2016. The following week, "Piece by Piece" made its debut Billboard Hot 100 chart at number eight, becoming Clarkson's eleventh Hot 100 top ten hit on the chart and tied itself with "Never Again" (2007) as her highest entry position on the chart. It also became her first song to reach the top 10 in since "Stronger (What Doesn't Kill You)" reached number one in 2012. It also ascended to the top position on the Billboard Digital Songs chart and Pop Digital Songs chart with 210,000 digital copies sold and 3.1 million streaming activity, posting an 852% digital surge and 969% streaming gain while also becoming her 100th number-one hit on the Billboard charts. In addition, the song re-entered the Billboard Adult Top 40 chart at number 33 and debuted on the Billboard Adult Contemporary chart at number 23. "Piece by Piece" peaked at number nine on the Adult Pop chart, becoming Clarkson's fifteenth top-10 hit on the chart and set a record for the female artist with the most top-10s on the chart. Internationally, "Piece by Piece" debuted on the Billboard Canadian Hot 100 at number 17, on the Official UK Singles Chart at number 95, with an entry at number 37 on the UK Top Sales Chart, and on the ARIA Singles Chart at number 24. Following a performance of "Piece by Piece" by Rebecca Grace on The X Factor, the song re-entered the Official UK Singles Chart at number 27, attaining a new peak position.

answer:
b

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Question: Which of the organizations that are represented on YBF's advisory board has the highest membership numbers? Passage:As of September 2010, YBF's "advisory board" includes Matthew Elliott, founder of the UK TaxPayers' Alliance, and representatives of the Heritage Foundation (a US conservative thinktank), US Competitive Enterprise Institute and American Conservative Union (a US conservative lobbying organisation). It also includes the founder of the US Leadership Institute, the President of the US Jesse Helms Center, the President of the Young America's Foundation, the co-founder of the US Henry Jackson Society and a former Executive Director of the Collegiate Network. British representatives include Professor Patrick Minford, blogger Iain Dale (who resigned in the same year) and two local councillors. Liam Fox, the shadow defence secretary, was a member of the YBF's parliamentary council. Conor Burns was until shortly before becoming an MP in 2010 the vice-president of YBF.

answer:
a