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: Was Leon Friend still active as a teacher the year Gorelick graduated from Brooklyn College? Passage:Born Shirley Fishman in Brooklyn, New York, she attended Abraham Lincoln High School. Her teacher, Leon Friend, arranged for guest lectures by commercial and fine artists. Shirley Fishman had the opportunity to study with three of them: Chaim Gross, Moses Soyer, and Raphael Soyer. Gross influenced her early sculptural work, which features squat figures with thick limbs. While attending Brooklyn College, where she earned her B.A. in 1944, she met Leonard Gorelick (19222011), a fellow student. They married in 1944 and shared an enthusiasm for art and culture. Leonard Gorelick was an orthodontist and later a collector of cylinder seals. He combined his interests by investigating the authenticity of cylinder seals through the use of dental technology, especially electronmicroscopy. Shirley Gorelick earned an M.A. at Teachers College, Columbia University in 1947. That year, she studied for several weeks with Hans Hofmann in Provincetown. For a short time in the late 1950s, she was a student of the painter Betty Holliday and, in the early 1960s, learned printmaking in the Long Island studio of Ruth Leaf.

answer:
a

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Question: Who was the first commander of the military unit Cyril Isaac served in during world war 1? Passage:He was born in Brunswick to Congregationalist minister Abraham Isaac and Mary Judd. He attended state schools and became a schoolteacher, working for the Victorian Education Department from 1900. On 3 September 1907 he married Elizabeth Brown, with whom he had four children. In 1913 he was appointed a supervisor of school gardening, and pioneered several early initiatives in this area. During World War I he served with the 58th Battalion, and after the war he spent time in England studying horticulture. He ran a nursery at Noble Park from 1922. From 1928 to 1931 and 1937 to 1940 he was a member of Dandenong Shire Council, and he was also chairman of Associated Nurseries Pty Ltd from 1932 to 1965 and president of the Nurserymen and Seedsmen's Association from 1936 to 1937. In 1940 he was elected to the Victorian Legislative Council as a United Australia Party member for South Eastern Province. While in the Council he ran a Save the Forests campaign, which evolved into the National Resources Conservation League in which Isaac played a leading role. He lost Liberal and Country Party endorsement in 1952 and was defeated running as an independent candidate. In 1956 he was appointed an Officer of the Order of the British Empire. Isaac died at Footscray in 1965.

answer:
b

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Question: What was the population of the city Zeke moved to in order to join the Crazy Mountaineers? Passage:The Morris Brothers were born in Old Fort, North Carolina. Originally, they began performing as a trio together with a third brother, George Morris. In 1933, Zeke moved to Concord and joined J. E. Mainer's Crazy Mountaineers He made his first recordings with the Mountaineers in August 1935 for Bluebird Records. Four years later, in 1937, Wiley and Zeke along with banjo player Wade Mainer did some radio work in the North Carolina towns of Asheville and Raleigh. In April 1938, The Morris Brothers, fiddler Homer Sherrill and banjo player Joel Martin, calling themselves the Smilin' Rangers, performed at radio station WBTM in Danville, Virginia. In September 1938, Zeke recorded with Charlie Monroe as a replacement for Bill Monroe just after the Monroe Brothers had disbanded. The same year, Zeke's musical career came to a halt when he went to work in a cotton mill in Gastonia. In 1939, the brothers moved to Asheville and WWNC radio, where they resumed their career. After World War II they retired and opened an auto repair business. Between 1938 and 1939, the Morris Brothers made 36 recordings for RCA Victor.

answer:
b