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.

[EX Q]: Question: How long had Jeffrey Ullman been teaching at Stanford the year Mairson got his B.A.? Passage:Mairson received a B.A. in Mathematics from Yale University in 1978 and a Ph.D. in Computer Science from Stanford University in 1984 under the supervision of Jeffrey Ullman. His Ph.D. thesis, The Program Complexity of Searching a Table, won the Machtey Award at the 1983 IEEE Symposium on Foundations of Computer Science (FOCS). Mairson was a Postdoctoral researcher at INRIA Rocqencourt from 1984 to 1985, at Stanford University in 1985, and at the University of Oxford in 1986. He held a Visiting Professor position from 1999 to 2001 at Boston University. From 2005 to 2007, Mairson has served as the Chair of the Faculty Senate at Brandeis. He is currently an Associate Editor of the journal Logical Methods in Computer Science and Information and Computation, and sits on the editorial board of Higher-Order and Symbolic Computation.

[EX A]: b

[EX Q]: Question: Which North American city hall building that used Superblocks was completed first? Passage:Superblocks are also used when functional units such as rail yards or shipyards, inherited from the 19th and early 20th centuries, are too big to fit in an average city block. A contemporary function which reflects ancient practices that also requires larger than typical blocks is the sports stadium or arena. Just as the Colosseum in ancient Rome, sports complexes require superblocks. The Providence Park stadium in Portland, for example, takes up four normal city blocks as does the equally large Greensboro Coliseum in North Carolina. Other contemporary institutions, establishments or functions that use superblocks are: city halls like Government Center, Boston and Toronto City Hall; regional general hospitals or specialized medical centres; convention and exhibition centers, such as Exhibition Place in Toronto and the Boston Convention and Exhibition Center; and downtown enclosed Shopping Malls such as Eaton Centre in Toronto, echoing the large gallerias of the 19th century. Cultural complexes, such as the Lincoln Center in New York City, often occupy a superblock achieved through the consolidation of regular city blocks. A recent superblock user is the merchandise distribution centre, which can range in area from one to ten city blocks.

[EX A]: a

[EX Q]: Question: What is the age difference between the two female artists MNEK worked on albums with in 2014? Passage:In January 2014, he featured on Gorgon City's single "Ready for Your Love". The song peaked to number 4 on the UK Singles Chart. On 20 April 2014, he premiered "Every Little Word" on 1Xtra, the "buzz" single from his debut studio album. On 9 May 2014, the remix EP, featuring Joe Goddard and Fred V & Grafix among others was released. Emenike has said we can expect to hear collaborations with Moko, Snakehips and Jimmy Napes on the record. The lead single "Wrote a Song About You" premiered on Annie Mac's BBC Radio 1 show on 13 June 2014. In June 2014, Oliver Heldens' track "Gecko (Overdrive)", which MNEK wrote, debuted at number one on both the UK Dance Chart and the UK Singles Chart. In 2014, he also worked with Madonna on her album, Rebel Heart, and produced the song "Feels So Good" by Kylie Minogue, from her album Kiss Me Once. On 22 July 2014, MNEK released the promotional single "In Your Clouds" as part of an iTunes Ones to Watch campaign. The song will feature on his debut studio album. His debut extended play (EP) Small Talk was released on 20 March 2015. In March 2015, JoJo announced that she worked with MNEK on her new studio album.

[EX A]:
b