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: Of the first two post-doc positions John Ellis held, which company did he work for the longest? Passage:After completing his secondary education at Highgate School, he attended King's College, Cambridge, earning his PhD in theoretical (high-energy) particle physics in 1971. After brief post-doc positions at SLAC and Caltech, he went to CERN and has held an indefinite contract there since 1978. He was awarded the Maxwell Medal and the Paul Dirac Prize by the Institute of Physics in 1982 and 2005 respectively, and is an Elected Fellow of the Royal Society of London since 1985 and of the Institute of Physics since 1991. He was awarded an Honorary Doctorate from the University of Southampton, and twice won the First Award in the Gravity Research Foundation essay competition (in 1999 and 2005). He is also Honorary Doctor at Uppsala University.

answer:
a


question:
Question: Who had the best record during the period that Barnsley F.C.  played in the Sheffield & District League? Passage:Barnsley Football Club is an English association football club based in the South Yorkshire town of Barnsley. Founded in 1887 under the name Barnsley St Peter's, the team played in the Sheffield & District League from the 1890–91 season and first entered the FA Cup in 1893–94. Two years later, they were accepted into the Midland League. The club changed its name to Barnsley F.C. in 1897; its team finished as Midland League runners-up in the first season under the new name, and were elected to the newly expanded Second Division of the Football League for the 1898–99 season. A 16th-place finish in their second season meant they had to apply for re-election; the application was successful, and Barnsley continued safely in mid-table until 1911, when they again needed to be re-elected to the League. Their cup form was rather better: either side of that poor League placing, they reached the FA Cup final. In 1909–10, they drew 1–1 with Newcastle United in the final at Crystal Palace, but lost 1–0 in the replay at Everton's Goodison Park ground. Two seasons later, after taking three replays to get through the quarter-final, they played out a goalless draw with West Bromwich Albion at Crystal Palace; this time Barnsley won the replay, at Sheffield United's Bramall Lane ground, by one goal to nil.

answer:
a


question:
Question: How old was Ervin when enforcement of the Jim Crow laws ended? Passage:Samuel James "Sam" Ervin Jr. (September 27, 1896April 23, 1985) was an American politician. A Democrat, he served as a U.S. Senator from North Carolina from 1954 to 1974. A native of Morganton, he liked to call himself a "country lawyer," and often told humorous stories in his Southern drawl. During his Senate career, Ervin was a legal defender of the Jim Crow laws and racial segregation, as the South's constitutional expert during the congressional debates on civil rights. Unexpectedly, he became a liberal hero for his support of civil liberties. He is remembered for his work in the investigation committees that brought down Senator Joseph McCarthy in 1954 and especially for his investigation of the Watergate scandal in 1972 that led to the resignation of Richard Nixon.

answer:

b