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 Richard when Filip began working with him? Passage:He was the son of a merchant, Adolf Abraham Eisenberg, and Ester nee Spiro. After finishing Sobieski Gymnasium in Krakow he studied medicine at the Jagiellonian University, where he obtained his PhD in medical studies in 1899. He then conducted postgraduate work in Vienna with Richard Paltauf and between 1901 and 1902 served as a research assistant to Odo Bujwid. Subsequently he worked in Paris, at the Pasteur Institute and then in Wrocaw (Breslau) under the direction of Richard Pfeiffer. Between 1919 and 1920 he was the head of a Military Hospital in Warsaw. In 1933 he became the director of the National Bacteriology Station in Krakow, a position he held until 1939. Until 1941 he was the head of the Institute of Medical Microbiology in Lwow (L'viv).
Links: a. Richard Paltauf b. Odo Bujwid c. Richard Friedrich Johannes Pfeiffer d. Odo Bujwid

Output: a

Input: Consider Input: Question: Who was the champion of Liga Alef that year when Hapel Nahriya F.C. was relegated to the fourth tier and never been back since? Passage:Hapoel Nahariya spent 12 seasons in the second tier of Israeli football. They have reached the second tier for the first time in the 195354 season, where they placed fifth in the North division. In the following season, the club reached their best placing to date, after they finished third in Liga Alef North division. In the 195657 season they finished second bottom, and relegated to Liga Bet. The club returned to Liga Alef, after they finished third in the 196263 Liga Bet North A division, and relegated back to Liga Bet after another second bottom finish at the following season. Two seasons later, Hapoel won Liga Bet North A division, however, history repeated itself, and they were relegated in the following season (which was the "double season" of 196668), after yet another second bottom finish. In the 196970 season the club won Liga Bet North A division once again, and promoted to Liga Alef. This time, their return to Liga Alef was successful, as they finished the 197071 season in the fifth place in Liga Alef North, and remained in the second tier until 1976, when Liga Artzit was created and became the new second tier of Israeli football, whilst Liga Alef became the third tier. Hapoel played in Liga Alef until the 198182 season, when they finished bottom and relegated to Liga Bet. They did not return to the third tier of Israeli football ever since.
Links: a. 198182 Liga Alef b. 195354 Liga Bet c. 196668 Liga Alef d. 197071 Liga Alef

Output: a

Input: Consider Input: Question: Between the bass player and the founding drummer of Kajagoogoo, who has more siblings? Passage:Islands is the second album by the British pop band Kajagoogoo, released on 21 May 1984 on the EMI label. This was the band's first album without lead vocalist Limahl, who had been fired by the band in mid-1983 and went on to pursue a solo career. Bass player Nick Beggs, already the group's main backing singer, took over lead vocal duties, and also wrote the lyrics. The album was co-produced by the band themselves, now a four-piece group, along with Colin Thurston, who had also produced their debut, White Feathers. It is the final album to-date to feature founding drummer Jez Strode. The album also marked the first time Nick Beggs used the Chapman Stick on a recording.
Links: a. Nick Beggs b. Lyrics c. United Kingdom d. Kajagoogoo
Output: a