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 many people lived in Milan when Diocletian restored political stability after the Crisis of the Third Century? Passage:During the Crisis of the Third Century the Roman Empire nearly collapsed under the combined pressures of invasions, military anarchy and civil wars, and hyperinflation. In 284, emperor Diocletian restored political stability. He carried out thorough administrative reforms to maintain order. He created the so-called Tetrarchy whereby the empire was ruled by two senior emperors called Augusti and two junior vice-emperors called Caesars. He decreased the size of the Roman provinces by doubling their number to reduce the power of the provincial governors. He grouped the provinces into several dioceses (Latin: diocesis) and put them under the supervision of the imperial vicarius (vice, deputy), who was the head of the diocese. During the Crisis of the Third Century the importance of Rome declined because the city was far from the troubled frontiers. Diocletian and his colleagues usually resided in four imperial seats. The Augusti, Diocletian and Maximian, who were responsible for the East and West respectively, established themselves at Nicomedia, in north-western Anatolia (closer to the Persian frontier in the east) and Milan, in northern Italy (closer to the European frontiers) respectively. The seats of the Caesars were Augusta Treverorum (on the River Rhine frontier) for Constantius Chlorus and Sirmium (on the River Danube frontier) for Galerius who also resided at Thessaloniki.
Links: a. Milan b. Danube c. Sirmium d. History of Trier

Ex Output:
a

Ex Input:
Question: Did other scientists keep blending inheritance open for further consideration? Passage:In the preface, Fisher considers some general points, including that there must be an understanding of natural selection distinct from that of evolution, and that the then-recent advances in the field of genetics (see history of genetics) now allowed this. In the first chapter, Fisher considers the nature of inheritance, rejecting blending inheritance, because it would eliminate genetic variance, in favour of particulate inheritance. The second chapter introduces Fisher's fundamental theorem of natural selection. The third considers the evolution of dominance, which Fisher believed was strongly influenced by modifiers. Other chapters discuss parental investment, Fisher's geometric model, concerning how spontaneous mutations affect biological fitness, Fisher's principle which explains why the sex ratio between males and females is almost always 1:1, reproductive value, examining the demography of having girl children. Using his knowledge of statistics, the Fisherian runaway, which explores how sexual selection can lead to a positive feedback runaway loop, producing features such as the peacock's plumage. He also wrote about the evolution of dominance, which explores genetic dominance. The last five chapters (8-12) include Fisher's more idiosyncratic views on eugenics.
Links: a. Sexual selection b. Demography c. Blending inheritance d. Parental investment

Ex Output:
c

Ex Input:
Question: Which team won the 1974 Minor Counties Championship? Passage:Pearsall made his debut for Staffordshire in the 1974 Minor Counties Championship against Shropshire. Pearsall played Minor counties cricket for Staffordshire from 1974 to 1981, which included 29 Minor Counties Championship matches. In 1975, he made his List A debut for Staffordshire against Leicestershire in the Gillette Cup. He made 2 further appearances in List A cricket for the county, against Devon in the 1st round of the 1978 Gillette Cup and Sussex in the 2nd round of the same competition. In his 3 List A matches for the county, he scored 49 runs at an average of 16.33, with a high score of 34. He later made 2 List A appearances for the Minor Counties North in the 1979 Benson & Hedges Cup against Middlesex and Kent. In these matches, he scored 17 runs at an average of 8.50, with a high score of 9.
Links: a. Shropshire County Cricket Club b. Minor Counties Cricket Championship c. 1975 Gillette Cup d. Middlesex County Cricket Club

Ex Output:
b