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 many years did Nick Van Exel play for the Nuggets? Passage:The 1998–99 NBA season was the Nuggets' 23rd season in the National Basketball Association, and 32nd season as a franchise. During the offseason, the Nuggets acquired Nick Van Exel from the Los Angeles Lakers, and second-year guard Chauncey Billups from the Toronto Raptors. Despite the return of Antonio McDyess, who was re-signed by the team after one season with the Phoenix Suns, the Nuggets continued to struggle under new head coach Mike D'Antoni losing eight of their first nine games. Top draft pick Raef LaFrentz out of Kansas was out for the remainder of the season with a knee injury after playing just twelve games. The Nuggets finished the lockout shortened season sixth in the Midwest Division with a 14–36 record. This was also their final season playing at McNichols Sports Arena. Following the season, second-year forward Danny Fortson and Eric Williams were both traded to the Boston Celtics, and D'Antoni was fired as coach.
 Links: a. Nick Van Exel b. Raef LaFrentz c. 1997–98 Los Angeles Lakers season d. Antonio McDyess
Example Output: a

Example Input: Question: Which of Moreno's partners was oldest? Passage:La Familia Michoacana, (English: The Michoacán Family) La Familia (English: The Family), or LFM is a Mexican drug cartel and a organized crime syndicate based in the Mexican state of Michoacán. Formerly allied to the Gulf Cartel—as part of Los Zetas—it split off in 2006. The cartel was founded by Carlos Rosales Mendoza a close associate of Osiel Cárdenas. The second leader, Nazario Moreno González, known as El Más Loco (English: The Craziest One), preached his organization's divine right to eliminate enemies. He carried a "bible" of his own sayings and insisted that his army of traffickers and hitmen avoid using the narcotics they produce and sell. Nazario Moreno's partners were José de Jesús Méndez Vargas, Servando Gómez Martínez and Enrique Plancarte Solís, each of whom has a bounty of $2 million for his capture, and were contesting the control of the organization.
 Links: a. José de Jesús Méndez Vargas b. Divinity c. Divinity d. Servando Gómez Martínez
Example Output: a

Example Input: Question: During what years was the Early Bronze Age? Passage:Iran is home to one of the world's oldest continuous major civilizations, with historical and urban settlements dating back to 7000 BC. The south-western and western part of the Iranian Plateau participated in the traditional Ancient Near East with Elam, from the Early Bronze Age, and later with various other peoples, such as the Kassites, Mannaeans, and Gutians. Georg Wilhelm Friedrich Hegel calls the Persians the "first Historical People". The Medes unified Iran as a nation and empire in 625 BC. The Achaemenid Empire (550–330 BC), founded by Cyrus the Great, was the first true global superpower state and it ruled from the Balkans to North Africa and also Central Asia, spanning three continents, from their seat of power in Persis (Persepolis). It was the largest empire yet seen and the first world empire. The Achaemenid Empire was the only civilization in all of history to connect over 40% of the global population, accounting for approximately 49.4 million of the world's 112.4 million people in around 480 BC. They were succeeded by the Seleucid, Parthian, and Sasanian Empires, who successively governed Iran for almost 1,000 years and made Iran once again as a leading power in the world. Persia's arch-rival was the Roman Empire and its successor, the Byzantine Empire.
 Links: a. Bronze Age b. Cyrus the Great c. Persepolis d. Central Asia
Example Output:
a