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: How old was the person George studied with at University of Michigan when George attended Muhlenberg College? Passage:At age 17 Miller began school-teaching to raise funds for higher education. In 1882 he entered Franklin and Marshall Academy, and progressed to Muhlenberg College in 1884. He received his B.A. in 1887 and M.A. in 1890. While a graduate student, Miller was Principal of schools in Greeley, Kansas and then professor of mathematics as Eureka College in Eureka, Illinois. He corresponded with Cumberland University in Lebanon, Tennessee for his Ph.D. in 1892. He then joined Frank Nelson Cole at University of Michigan and began to study groups. In 1895 he went to Europe where he heard Sophus Lie lecture at Leipzig and Camille Jordan at Paris. In 1897 he went to Cornell University as an assistant professor, and in 1901 to Stanford University as associate professor. In 1906 he went to University of Illinois where he taught until retirement in 1931.
Links: a. Cumberland University b. Frank Nelson Cole c. Frank Nelson Cole d. Frank Nelson Cole
Example Output: b

Example Input: Question: Which county that I-24 goes through has the highest population? Passage:I-24 continues southeast through the rapidly growing suburbs of Nashville, and crosses into Rutherford County near the city of LaVergne, where there are three exits. Beginning at this point, I-24 is relatively straight and flat for most of its distance through Middle Tennessee. The straightest stretch of highway in Tennessee is located on I-24 between Lavergne and eastern Murfreesboro, where the route is perfectly straight for about fifteen miles, although the median widens and narrows. Four miles later is an interchange with SR 102, which connects to Smyrna and the Nissan Motor Manufacturing Plant. Another four miles later is an interchange with Interstate 840, the outer southern beltway around Nashville, and I-24 enters Murfreesboro, the largest suburb of Nashville. In Murfreesboro, I-24 has interchanges with SR 96 (which connects of Franklin), SR 99 (New Salem Highway), and US 231 (which connects to Lebanon and Shelbyville), respectively, and at the final Murfreesboro exit (US 231), the HOV lane designation ends, and I-24 narrows to six lanes and then four lanes a short distance later. Three miles later is an interchange with the Joe B. Jackson Parkway, which serves as an outer beltway around southeast Murfreesboro. I-24 then enters a more rural area, and at exit 97 has an interchange with SR 64, which connects to Shelbyville. I-24 then curves to the south, then the east, briefly enters Bedford County, and then Coffee County. At exit 105 is an interchange with US 41, and five miles later I-24 enters Manchester, where it has interchanges with SR 53, SR 55, and US 41, respectively. I-24 continues through a rural, largely agricultural area where it crosses into Grundy County and has an interchange with US 64 and SR 50.
Links: a. Rutherford County, Tennessee b. Tennessee State Route 53 c. Nissan d. Lebanon, Tennessee
Example Output: a

Example Input: Question: Which country had a greater GDP the year Laurier began his conversion to management, China or Dubai? Passage:Laurier was born in Creteil (Val-de-Marne). He made his debut for Coeuilly, which became Stade de Reims. At the champenois club, he played alongside big names such as Raymond Kopa and Lucien Muller. He played his first match in the championship alongside professionals on 17 October 1965. He took part in the return of the club to the top-flight in 1970. Two years later, he was signed by Paris Football Club, who had returned to Division 1. However, the Parisian club were relegated again two years later. Alain Laurier then joined Angers, without further success. He spent two seasons with the club in Division 2. In 1976, he began his conversion to management. He became manager (DEPF), while continuing as a player at Le Mans. He continued as a player-manager at Caen, stopping as a player in his last season at the Normandy club. He then coached Poissy, Grenoble, Istres, Dijon as well as foreign clubs in Dubai and China. From 2002 to 2004, he was technical director of the Qatar team.
Links: a. Champigny-sur-Marne b. Dubai c. Lucien Muller d. Champigny-sur-Marne
Example Output:
b