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.

Input: Consider Input: Question: What golf course did Romero win his first senior title? Passage:Romero first played on the European Tour in 1985 and was a full member from 1988 to 2005. He has 8 tournament victories and seven top twenty placings on the Order of Merit. In 2002 he became the third oldest winner on the European Tour (behind Des Smyth and Neil Coles) when he won the Scottish Open just three days before his 48th birthday. Romero came fifth on the Order of Merit for 2002. Romero turned fifty in 2004, and just a few days later he finished in a tie for second at his first senior tournament, the Senior British Open. In 2005 he won his first senior title at the European Seniors Tour's Travis Perkins Senior Masters, and he won the Wentworth Senior Masters in both 2005 and 2006. In 2006, he lost in a playoff against Loren Roberts for the Senior British Open Championship and won a playoff against Lonnie Nielsen for the JELD-WEN Tradition for his first Champions Tour win and major. He was the Champions Tour's 2006 Rookie of the Year. He won the U.S. Senior Open, his second major, at The Broadmoor in Colorado Springs in 2008.
 Links: a. Senior Open Championship b. Wentworth Senior Masters c. PGA Tour Champions d. Lonnie Nielsen

Output: b


Input: Consider Input: Question: Who earned the bronze medal in the event where the Austrian athlete earned the gold? Passage:Sonja Henie of Norway won her third straight gold medal in the ladies' singles figure skating event, her last Olympic medal as she turned professional shortly after the Games. Karl Schäfer of Austria also successfully defended his men's singles figure skating title from Lake Placid. Sweden swept the medals in the cross-country 50 km, as did Norway in the Nordic combined. Norway's Ivar Ballangrud was the most successful athlete, winning three golds and a silver in speed skating and taking his career total to seven Olympic medals. Other multiple medal winners were Oddbjørn Hagen of Norway (one gold, two silvers), Ernst Baier of Germany (one gold, one silver), Joseph Beerli of Switzerland (one gold, one silver), Erik August Larsson of Sweden (one gold, one bronze), Birger Wasenius of Finland (two silvers, one bronze), Olaf Hoffsbakken of Norway (two silvers), Fritz Feierabend of Switzerland (two silvers) and Sverre Brodahl of Norway (one silver, one bronze).
 Links: a. Figure skating at the 1936 Winter Olympics – Men's singles b. Nordic combined at the 1936 Winter Olympics c. Fritz Feierabend d. Nordic combined at the 1936 Winter Olympics

Output: a


Input: Consider Input: Question: Where was the person born who promulgated the act that gives statutory authority to martial law in Thailand? Passage:Martial law in Thailand derives statutory authority from the Act promulgated by King Vajiravudh following the abortive Palace Revolt of 1912, entitled "Martial Law, B.E. 2457 (1914)". Many coups have been attempted or succeeded since then, but the Act governing martial law, amended in 1942, 1944, 1959 and 1972, has remained essentially the same. In January 2004, the Prime Minister of Thailand, Thaksin Shinawatra, declared a state of martial law in the provinces of Pattani, Yala, and Narathiwat in response to the growing South Thailand insurgency. On September 19, 2006, Thailand's army declared martial law following a bloodless military coup in the Thai capital of Bangkok, declared while Prime Minister Shinawatra was in New York City to address the United Nations General Assembly. General Sonthi Boonyaratglin took the control of the government, and soon after handed the premiership to ex-Army Chief General Surayud. Sonthi himself is Chief of the Administrative Reform Council. At 3 am, on May 20, 2014, following seven months of civil and political unrest, Army Commander-in-Chief Gen. Prayuth Chan-ocha, declared martial law nationwide.
 Links: a. Vajiravudh b. South Thailand insurgency c. Palace Revolt of 1912 d. Pattani Province


Output: a