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 did it take to construct the Ekaterinburg (K-84)? Passage:Construction of the nuclear submarine Ekaterinburg (K-84) began at the Northern Machinebuilding Enterprise (Sevmash) in Severodvinsk on 17 February 1982, before being commissioned into the Soviet Navy on 30 December 1985. She was the second of the seven-boat Project 667BDRM Delfin class, which was developed at the Rubin Design Bureau in September 1975. A ballistic missile submarine, she was designed primarily to carry up to 16 R-29RM Shtil (NATO designation: SS-N-23 Skiff) SLBM for use against military and industrial facilities in the case of a nuclear war. Each Shtil missile carries ten 100 kt multiple independently targeted reentry vehicles, and has a circular error probable of . She is also equipped with RPK-7 Veter (NATO designation: SS-N-16 Stallion) anti-ship missiles for use against large surface vessels, and self-defense torpedoes.

[EX A]: b

[EX Q]: Question: How long did the coach Bzdelik replaced coach the Wake Forest team? Passage:Wake Forest is generally regarded as a competitive program in men's basketball, frequently qualifying for the NCAA Men's Division I Basketball Championship (23 times in the school's history). They reached the Final Four once, in 1962. The school's famous basketball alumni include Billy Packer, a guard on the 1962 Final Four team who became far more famous as a basketball broadcaster; Tyrone Curtis "Muggsy" Bogues, the shortest player ever to play in the NBA; Randolph Childress, for his MVP performance in the 1995 ACC Tournament; Washington Wizards swingman Josh Howard; Miami Heat forward James Johnson; Chris Paul of the Oklahoma City Thunder, 2006 NBA Rookie of the Year Award,9-time NBA All-star; and two-time league MVP, Five-time NBA Champion and three-time NBA Finals MVP Tim Duncan, and Minnesota Timberwolves starting point guard and 2015 NBA all-star Jeff Teague. Lawrence Joel Veterans Memorial Coliseum is the home venue for the Demon Deacons basketball team. Skip Prosser, Wake Forest University's men's basketball coach since 2001, died in Winston-Salem on July 26, 2007. One of Prosser's assistant coaches, Dino Gaudio, was named to replace him. On April 13, 2010, Jeff Bzdelik was hired, taking the place of the recently fired Gaudio. Despite no post-season success (0 wins in 3 ACC Tournament attempts) and an 11–42 record against ACC competition over the first three years of his tenure, Athletic Director Ron Wellman announced that Bzdelik would return for a fourth season as coach. On March 20, 2014, Jeff Bzdelik resigned his position as head coach. On April 4, 2014, Wake Forest hired former NCAA Champion and NBA player Danny Manning as its new head coach.

[EX A]: b

[EX Q]: Question: The Avars ruled over a basin in 560, what current country is that area located in? Passage:Since about 560, the Avars had ruled over large parts of the Pannonian Basin and Carantania southeast of Francia, though in the last decades, the Avar Khaganate had to deal with Bulgarian and Croat incursions. To secure the frontier of his empire and the traffic on the trade routes to the east, Charlemagne allied with Khan Krum of Bulgaria and the Croatian duke Vojnomir, and from 791 launched several campaigns against the Avars, where he, according to the Vita Karoli Magni, encountered only modest opposition. In 796 Carolingian forces under Charlemagne's son Pepin of Italy destroyed the main Avar fortress called the Ring of the Avars and made the Khagan a Frankish vassal, while the remaining Avars retreated behind the Tisza River. The victory is perpetuated by the poem De Pippini regis Victoria Avarica. 

[EX A]:
b