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.

Example Input: Question: Who held O'Leary's position at Georgetown prior to him occupying it? Passage:Arthur Aloysius O'Leary was born on September 27, 1887, in Washington, D.C. His father was a worker on the Baltimore and Ohio Railroad. He was educated at Gonzaga College, and his parish was the adjacent St. Aloysius Church. He entered the Society of Jesus on August 14, 1903, and was sent to St. Andrew-on-Hudson in New York for his scholasticate. He then completed his studies at Woodstock College in Maryland, where he earned a Doctor of Philosophy. He went to Georgetown University in 1912, as a professor of philosophy, holding the position until 1916. At the same time, he was also spiritual director for the university. He was finally ordained a priest in 1919, becoming a member of the first class of priests ordained at Georgetown. He then returned to St. Andrew-on-Hudson, where he taught for several years.

Example Output: a

Example Input: Question: How many siblings did Khalid have in total? Passage:Khalid was a member of the Shayban tribe, dominant in the region of Diyar Bakr in the northern Jazira, and third son of Yazid ibn Mazyad al-Shaybani, who served twice as Arab governor (ostikan) of Arminiya (a large province encompassing the whole of Transcaucasia). Khalid served in the same office no less than four times: in 813/814, 828–832, briefly in 841 and again under Caliph al-Wathiq (r. 842–845). In his first tenure, he showed himself conciliatory towards the native Christian population and the nakharar princes, but his second tenure was marked by the brutal suppression of several revolts by local Arab magnates, as well as the harsh treatment of the Christian population. As a result, when his re-appointment to the office was announced in 841, a rebellion broke out, forcing the Abbasid government to recall him immediately. Nevertheless, al-Wathiq assigned Arminiya to Khalid. The latter arrived in the province at the head of an army, and crushed any opposition. He died soon after at Dvin, where he was buried. He was succeeded by his son, Muhammad. His younger son Haytham ibn Khalid ruled in the family's stronghold of Shirvan, and was the first to claim the title of Shirvanshah.

Example Output: a

Example Input: Question: Who was the head coach of the team that Smith played for when he returned to the NHL in the 1975-76 season? Passage:Smith was originally drafted by the Boston Bruins in the second round (7th overall) in the 1966 NHL Amateur Draft. He played in Boston from 1968–69 to 1971–72. Boston traded him in 1972 to the California Golden Seals of the NHL. He played there until the end of the next season (1972–73) when he left the NHL for the World Hockey Association (WHA) and played for the Minnesota Fighting Saints. In 1975–76 Smith returned to the NHL to play for the St. Louis Blues. He would remain with the Blues until the 1976–77 NHL season when he returned to the Boston Bruins. In 1980 Rick Smith would leave Boston to play one more NHL season split between the Detroit Red Wings (11 games) and the Washington Capitals (40 games). He won the Stanley Cup with the Boston Bruins in 1970. Rick Smith was a steady defenseman, not a scorer but a reliable part of talented teams. An important part of winning Bruin teams who worked hard in every game he participated in.

Example Output:
a