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 Jacques Cartier when he named Baie des Chaleurs? Passage:Bathurst had been the location of the annual Mi'kmaq summer coastal community of Nepisiguit prior to European settlement. Europeans first reached the shores of the Baie des Chaleurs when in 1534 it was named by Jacques Cartier. Early settlers from France came to the area in the 17th century in what became part of the colony of Acadia. In 1607 Samuel de Champlain sailed into the Miramichi, and in 1636, Nicolas Denys was granted a seignory by the French crown, apparently the third grant in the colony of Acadie. Jean Jacques Enaud, who hailed from the French Basque Country, was granted in 1638 the seignory at the southeastern gap of the harbor later named Alston Point. Remark is made on William Francis Ganong's map of Bathurst Harbour, depicted here at left, of the residence of Nicolas Denys and the seignory of Gobin.
 Links: a. Nicolas Denys b. Miꞌkmaq c. Jacques Cartier d. Nicolas Denys
Example Output: c

Example Input: Question: Did the highest scoring fighter ace have any siblings? Passage:After a short rest, the 90th continued across the Moselle River to take Mainz, 22 March, and crossed the rivers Rhine, the Main, and the Werra in rapid succession. Pursuit continued to the Czech border, 18 April 1945, and into the Sudetes mountain range. The division was en route to Prague when they came upon the remaining 1500 emaciated prisoners left behind by the SS at Flossenbürg concentration camp. Today, a memorial wall at the former camp honors the 90th as the liberators of Flossenbürg concentration camp. A week later, word came that the war in Europe ended on 8 May 1945. On that same day, Erich Hartmann, the highest-scoring fighter ace in history, along with a squadron of the elite Jagdgeschwader 52 fighter wing (the highest-scoring fighter wing in history), surrendered to the 90th.
 Links: a. Main (river) b. Jagdgeschwader 52 c. Prague d. Erich Hartmann
Example Output: d

Example Input: Question: How many years did the war last for which the 60th anniversary of its end was celebrated by the 2005 European Stars' Tour? Passage:Kalivodová first worked with the Prague State Opera in 2001, as part of the Pounding on the Iron Curtain project, a production of two operas by Vladimir Wimmer. In 2002 she made her first appearance at the National Moravian-Silesian Theatre in Ostrava, playing Kontshakovna in the opera Prince Igor. Later the same year she performed the role of Amastrys in Opera Praha's production of Xerxes, which toured Germany, Switzerland, France and Luxembourg. In December 2003 she performed with Leo Nucci of the New York Metropolitan Opera at the Žofín Palace in Prague, followed by an appearance at the Konzerthaus in Vienna in June 2004 to mark the accession of the Czech Republic to the European Union. Kalivodová has since then performed around the world, including the Centre for Fine Arts in Brussels, and the State Kremlin Palace in Moscow, as well as concerts in Japan and the United States, and joined the European Stars' Tour in 2005, celebrating the 60th anniversary of the end of the Second World War. 
 Links: a. State Opera (Prague) b. Ostrava c. World War II d. United States
Example Output:
c