In this task, you're given a question, a context passage, and four options which are terms from the passage. After reading a passage, you will get a brief understanding of the terms. Your job is to determine by searching and reading further information of which term you can answer the question. Indicate your choice as 'a', 'b', 'c', or 'd'. If you think more than one option is plausible, choose the more probable option to help you answer the question.

Ex Input:
Question: When was the college founded where Beloff earned a degree in chemistry? Passage:Anne Beloff was born in 1921 in Hampstead to Simon Beloff and Marie Katzin. Her parents were of Russian–Jewish background, and her siblings included the historian Max Beloff, Baron Beloff, the psychologist John Beloff, the journalist Nora Beloff, and the politician Renee Soskin. She earned a degree in chemistry from University College London in 1942 before completing a PhD in the biochemistry of skin burns with Rudolph Peters at the University of Oxford. She visited Harvard Medical School in 1946 to perform research and returned to the UK in 1948. In the same year she married Ernst Boris Chain, a biochemist who had won the Nobel Prize in Physiology or Medicine in 1945, and moved with him to Rome.
 Links: a. Max Beloff, Baron Beloff b. University College London c. Ernst Chain d. Nora Beloff

Ex Output:
b


Ex Input:
Question: What is Lorraine Copeland's field of study? Passage:It was first studied by Lorraine Copeland and Peter Wescombe in 1965–1966. A wide variety of materials were recovered from the site and its immediate area that are now held in the Saint Joseph University in Beirut. Stone tools from the surface included numerous short, wide, sickle blades with fine denticulation or nibbling along with tanged arrowheads, scrapers, chisels, axes, burins, obsidian and a small green stone axe. Pottery resembled middle periods at Byblos and coloured similar to at Ard Tlaili with red or black washes. Both fine and coarse shards were found of jars with a variety of collared and flared necks and flat bases along with bow rims such as those found at Jericho. Vessels were decorated with stabbed and incised designs, finger pressed around the rim and smoothed by hand or with straw. A painted lattice pattern was detected on at least one piece. Comparisons were made with middle and late Neolithic periods at Byblos showing inhabitation from several phases. The site was also used in Bronze Age and Classical times and material from these phases has been found over a wide area around the site.
 Links: a. Beirut b. Lorraine Copeland c. Axe d. Arrowhead

Ex Output:
b


Ex Input:
Question: What year was the club that Threlfall played for in 1987 found in? Passage:Threfall played for Cumberland in 1987, making a single appearance in the Minor Counties Championship against Cambridgeshire and a single appearance in the MCCA Knockout Trophy against Cheshire. In 1988, Threfall played Second XI cricket for Sussex, with him also making his first-class debut for the county in that season against Somerset at the Recreation Ground, Bath. He played regularly for the Sussex Second XI, but would only make two further first-class appearances for the county, against the touring Sri Lankans in 1990 and Cambridge University in 1991. He never batted in his three first-class appearances, but with the ball he took 7 wickets at an average of 18.57, with best figures of 3/45. He also made a single List A appearance for the county against the touring Zimbabweans in 1990. He ended Sussex's innings of 233/8 unbeaten on 17, while in the Zimbabweans innings he took figures of 3/40 from 10 overs, with Sussex winning by 95 runs. He continued to play for the Sussex Second XI until 1994.
 Links: a. Cumberland County Cricket Club b. Sussex County Cricket Club c. Somerset County Cricket Club d. First-class cricket

Ex Output:

a