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: How old was Rudy Vallee when he reached number 15 on the Billboard charts? Passage:Rudy Vallee was the first artist to make the charts in Billboard magazine with "As Time Goes By" when he took the song to number 15 in 1931, but after the song was featured in the film Casablanca his recording was reissued and spent four weeks at number one in 1943. "Begin the Beguine" was first put on the charts by Xavier Cugat & His Waldorf-Astoria Orchestra with Don Reid on vocal for two weeks in 1935 when it reached number 13. Patti Austin's "We're in Love" made it to number 90 on the magazine's R&B chart in February 1978, and the Expanded Edition CD bonus track "I Never Said I Love You" was first recorded by Barbara Mandrell for her 1976 album Midnight Angel but was a number 84 pop hit for Orsa Lia that also spent a week at number one on the magazine's Easy Listening chart in 1979.
Links: a. Waldorf Astoria New York b. Casablanca (film) c. Barbara Mandrell d. Rudy Vallee

Output: d

Input: Consider Input: Question: How many people attended the conference held near Berlin in January 1942? Passage:Following the invasion of Poland in 1939 most of the 3.5 million Polish Jews were rounded up and put into newly established ghettos by Nazi Germany. The system was intended to isolate the Jews from the outside world in order to facilitate their exploitation and abuse. The supply of food was inadequate, living conditions were cramped and unsanitary, and the Jews had no way to earn money. Malnutrition and lack of medicine led to soaring mortality rates. In 1941, the initial victories of the Wehrmacht over the Soviet Union inspired plans for the German colonisation of occupied Poland, including all territory within the new district of General Government. At the Wannsee Conference held near Berlin on 20 January 1942, new plans were outlined for the genocide of the Jews, known as the "Final Solution" to the Jewish Question. The extermination programme was codenamed Aktion Reinhard in German, to differentiate it from the Einsatzgruppen mass killing operations in territories conquered by Nazi Germany, in which half a million Jews had already been annihilated.
Links: a. Einsatzgruppen b. Wannsee Conference c. Operation Reinhard d. General Government

Output: b

Input: Consider Input: Question: Who was worth more money when The Sacketts was released, Tom Selleck or Sam Elliott? Passage:Osterhage began his acting career in a television adaptation of in 1978 and starred in the 1979 TV movie The Legend of the Golden Gun. He is probably most recognizable to western fans in his role as Tyrel Sackett in the 1979 western The Sacketts, followed by the 1982 The Shadow Riders, both being film adaptations of novels by western novelist Louis L'Amour. The Shadow Riders is not a part of the "Sackett" book series, and the actors play totally different roles. In both films he starred opposite Tom Selleck and Sam Elliott. In the first film he also starred alongside western legends Ben Johnson and Glenn Ford, with Johnson also starring in the second. Osterhage has appeared in twenty-seven films, made-for-television movies, and television series appearances in TV series including The Dukes of Hazzard, Knight Rider, T. J. Hooker, Scarecrow and Mrs. King, Murder, She Wrote, Moonlighting, Simon & Simon, Matlock, as well as the computer game . His latest appearance is in the 2008 film Taken by Force. He also played Marshal James Anderson in the computer game Outlaws, released in 1997.
Links: a. The Legend of the Golden Gun b. Tom Selleck c. Sam Elliott d. Murder, She Wrote
Output: b