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.

Example Input: Question: Which road is longer, KY 1319 (Kings Church Road) or KY 155 (Taylorsville Lake Road)? Passage:Kentucky Route 1531 is a rural secondary highway that begins in northeastern Bullitt County and ends in northwestern Shelby County, but the route spends almost all of its length in the city of Louisville in eastern Jefferson County. The highway begins at KY 1319 (Kings Church Road) near Whitfield. KY 1531 heads northwest along Dawson Hill Road then turns northeast onto Routt Road to enter the city of Louisville and Jefferson County. The highway crosses Wheelers Run and Back Run and meets the eastern end of KY 1819 (Brush Run Road) south of the Routt neighborhood of Louisville. KY 1531 follows Sheckels Run to its crossing of Cane Run and reaches KY 155 (Taylorsville Lake Road) south of Fisherville. The highway runs concurrently with KY 155 northwest across Floyds Fork of the Salt River to KY 148 (Taylorsville Road), with which the route heads east through Fisherville and across Floyds Fork again.
Links: a. Kentucky Route 155 b. Louisville, Kentucky c. Fisherville, Louisville d. Concurrency (road)
Example Output: a

Example Input: Question: Which location now has the largest population, where McCulloch was born or where he died? Passage:McCulloch was born in Bonnybridge, Stirlingshire, Scotland, to Agnes (nee Morrison) and Thomas McCulloch. He left school at an early age to work as a coal miner, and then later enlisted in the British Army. He served in Africa and Europe during World War I, holding the rank of battalion sergeant major, and was both mentioned in despatches and awarded the Military Medal. After the war's end, McCulloch returned to coal mining. He emigrated to Western Australia in 1928, and settled in Kalgoorlie, working as a truck driver and municipal employee. He served as secretary of the local trades hall from 1943 to 1949. McCulloch entered parliament at the 1949 Hannans by-election, caused by the death of David Leahy. He was re-elected at the 1950 and 1953 state elections. He left parliament when his seat was abolished prior to the 1956 election, and died in Perth in March 1971, aged 77. McCulloch had married Agnes Burt Montgomery in 1921, with whom he had two children.
Links: a. British Army b. 1956 Western Australian state election c. Military Medal d. Perth
Example Output: d

Example Input: Question: Who hosted the award show where "Woman" won an award for Best Hard Rock Performance? Passage:After its success in Australia, Wolfmother was later released internationally in early 2006 on 24 April in the UK, where it reached number 25 on the UK Albums Chart, and on 2 May in the US, where it reached number 22 on the Billboard 200. A number of singles were released from the album, including "Woman" which reached number 34 in Australia, number 31 on the UK Singles Chart, and number 7 on the US Billboard Mainstream Rock chart. The song later won the Grammy Award for Best Hard Rock Performance at the 49th Annual Grammy Awards, the nomination for which Heskett had previously described as "an honour". The final single from the album, "Joker & the Thief", later reached the top ten in Australia. The subsequent worldwide tour included appearances at festivals such as Fuji Rock in Tokyo, Japan, the inaugural Virgin Festival, and Reading and Leeds Festivals in the UK. On 14 November 2006, the band performed a cover version of "Communication Breakdown" by English hard rock band Led Zeppelin as a tribute to the band for their induction into the UK Music Hall of Fame.
Links: a. 49th Annual Grammy Awards b. UK Singles Chart c. Fuji Rock Festival d. Communication Breakdown
Example Output:
a