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: Of the characters who married in 1986, which of their actors was younger? Passage:Linda was introduced as the wife of Mick Carter, played by Danny Dyer, the brother of established character Shirley Carter (Linda Henry), who has appeared in EastEnders since 2006. Luisa Bradshaw-White joined the cast as Shirley's sister Tina Carter in early November, and Linda was the second new Carter to appear after her. Kellie Bright's casting was announced alongside Danny Dyer's on 1 October 2013, a week after Bradshaw-White's casting was revealed. Linda was described as having been with Mick since they were teenagers, and despite not being 'blessed with brains', is a 'tough woman who will always fight tooth and nail for her family - especially her children'. Bright previously appeared as a bridesmaid in 1986 at the wedding of Michelle Fowler (Susan Tully) and Lofty Holloway (Tom Watt), and starred in scenes opposite her current co-star Letitia Dean, who continues to appear as Sharon Watts. Bright estimated herself to be aged 10 at the time. She also auditioned for the role of Tanya Branning in 2006, a role that was eventually given to Jo Joyner.
Links: a. Sharon Watts b. Susan Tully c. Danny Dyer d. Tina Carter
Example Output: b

Example Input: Question: Who owns the tallest building in Dubai? Passage:Dubai, the largest city in the United Arab Emirates, is home to many modern high-rises, 108of which stand taller than . The tallest building in Dubai is the Burj Khalifa, which rises and contains 163 floors. The tower has stood as both the tallest building in the world and the tallest man-made structure of any kind in the world since its completion in January 2010. The second-tallest building in Dubai is the Marina 101, which also stands as the world's second tallest residential skyscraper. The skyscrapers of Dubai are, for the most part, clustered in three different locations. The land along E 11 Road was the first to develop, followed by the Dubai Marina neighborhood and the Business Bay district.
Links: a. List of tallest buildings b. Burj Khalifa c. Burj Khalifa d. Burj Khalifa
Example Output: b

Example Input: Question: Which is wider between the two bodies of water the CR 540 runs through? Passage:The first of CR 540 are concurrent with the entire length of Route 140, running southeast through commercial areas of Carneys Point Township from an intersection with US 130 and interchanging with I-295 and the New Jersey Turnpike/US 40 at the point US 40 splits from the New Jersey Turnpike. From the east end of Route 140, signage for CR 540 begins past US 40, with the route heading southeast on two-lane undivided Hawks Bridge Road. The road runs through residential neighborhoods before crossing the Salem River into Mannington Township. The route intersects CR 631 as it heads through forests before entering a mix of woods and farms as the road turns south and briefly becomes a divided highway at the CR 646 junction. From here, CR 540 becomes Pointers Road and runs through more agricultural areas, crossing the marshy Mannington Creek before briefly turning southeast onto Bypass Road and intersecting CR 620 and Route 45.
Links: a. Concurrency (road) b. Mannington Creek c. U.S. Route 130 d. U.S. Route 130
Example Output:
b