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: How old was the commander in chief when he coordinated a massive anti-guerrilla operation? Passage:In 1970, 22-year-old Crespo had dropped out of IST and was eventually drafted into military service in the Portuguese Colonial War. He transferred to Mozambique where his military occupation was to check the cement cargoes from Beira to the Cahora Bassa Dam construction site, near Tete. Some time later, due to his good fluency in English, he was placed in the press office of Kaúlza de Arriaga, the commander in chief of the Portuguese Armed Forces in Mozambique, who had coordinated a massive anti-guerrilla operation against FRELIMO separatists in 1970 - the Gordian Knot Operation. While serving in the army, Crespo also entered the newly created School of Medicine of the University of Lourenço Marques where he would complete a number of academic disciplines but did not graduate. He also married Helen de Souza from Johannesburg, a South African woman with Portuguese ancestry who worked in genetics. After the Carnation Revolution left-leaning military coup at Lisbon in April 1974, fresh out of the troop, Crespo fled Mozambique for South Africa.
 Links: a. Portuguese Colonial War b. Tete, Mozambique c. Kaúlza de Arriaga d. Kaúlza de Arriaga

Ex Output:
c


Ex Input:
Question: Who was the patron of the city where he lived until his death? Passage:Timon of Phlius ( ; , , ; BC – c. 235 BC) was a Greek Pyrrhonist philosopher, a pupil of Pyrrho, and a celebrated writer of satirical poems called Silloi (). He was born in Phlius, moved to Megara, and then he returned home and married. He next went to Elis with his wife, and heard Pyrrho, whose tenets he adopted. He also lived on the Hellespont, and taught at Chalcedon, before moving to Athens, where he lived until his death. His writings were said to have been very numerous. He composed poetry, tragedies, satiric dramas, and comedies, of which very little remains. His most famous composition was his Silloi, a satirical account of famous philosophers, living and dead; a spoudaiogeloion in hexameter verse. The Silloi has not survived intact, but it is mentioned and quoted by several ancient authors.
 Links: a. Silloi b. Athens c. Athens d. Spoudaiogeloion

Ex Output:
b


Ex Input:
Question: How old was John Hamilton, 1st Marquess of Abercorn, when his younger son was elected to Parliament? Passage:The younger son of John Hamilton, 1st Marquess of Abercorn, he was evidently educated at Harrow School, where he was a lieutenant of volunteers in 1803. He matriculated at Christ Church, Oxford on 24 October 1805, but left there for Cambridge, where he was admitted as a nobleman to St John's College on 19 October 1807. In the mean time, he was elected as Member of Parliament for Dungannon at the general election in May 1807, though underage, through the patronage of his father's political ally, Thomas Knox, 1st Viscount Northland. It was intended that he should later contest County Donegal or County Tyrone, but he suffered from illness, and may not ever have taken his seat. In January 1808, he sailed for Brazil in the brig Eclipse to recover his health, but died in Madeira in June.
 Links: a. John Hamilton, 1st Marquess of Abercorn b. Brig c. Madeira d. Brazil

Ex Output:

a