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.

Ex Input:
Question: Which city had a greater population the year that Van der Lans stopped attending Catholic primary school in Amsterdam: Amsterdam or The Hague? Passage:Van der Lans has a Catholic background. Between 1960 and 1967 he attended a Catholic primary school in Amsterdam (until 1964) and The Hague. Between 1967 and 1973 he attended a Catholic secondary school in The Hague. He attended the atheneum and specialized in sciences. Between 1973 and 1981 he studied psychology at the Catholic University Nijmegen. In 1977 he received his candidate's exam (roughly equivalent to a bachelor's degree) and in 1981 he received his doctoral exam (roughly equivalent to a master's degree. Van der Lans specialized in cultural psychology and Psychology of religion. He also took additional courses in communication studies and education studies. He wrote his doctoral thesis about "Youth Culture, Provo and the Youth Movement" . Between 1979 and 1981 he attended courses to become a teacher in civics and science education. Between 1977 and 1981 he worked as a student-assistant on the faculty of social sciences at different departments. Between 1977 and 1983 he worked as a journalist for the quarterly magazine Psychologie & Maatschappij (Psychology and Society).
 Links: a. Amsterdam b. Science education c. Psychology d. Radboud University Nijmegen

Ex Output:
a


Ex Input:
Question: What band(s) the artist whose song "Chamakay" Polachek contributed vocals belong to? Passage:In 2010, she joined Jorge Elbrecht of Brooklyn-based Violens to record a "sgin" of Justin Bieber's "Never Let You Go": "We went on YouTube to find a video among the highest ranks of hits, and came across 'Never Let You Go'. We went on to make what we call a 'sgin' (anagram of the word 'sing')—an original song written specifically to synch into someone else's video on mute". Caroline shot and directed video for Violens' "It Couldn't Be Perceived". Polachek and Elbrecht collaborated again in 2014 on two singles, "I.V. Aided Dreams (feat. Caroline Polachek)" and "Full Mental Erase (feat. Caroline Polachek)". In 2012, she sang with Ice Choir (solo project of Kurt Feldman of The Pains of Being Pure at Heart) on the song "Everything Is Spoilt by Use" and directed/edited its official video. Caroline contributed vocals to Blood Orange's "Chamakay" (2013), collaborating with Blood Orange again on "Holy Will" (2018). In late 2013, Polachek wrote and produced "No Angel", which was featured on Beyoncé's critically acclaimed fifth studio album, Beyoncé. Thanks to this song, at the 57th Annual Grammy Awards, she received a Grammy Award nomination for Album of the Year. Polachek then collaborated with PC Music's, Danny L Harle in early 2016 on the single "Ashes of Love". Polachek collaborated with felicita throughout his album "Hej!" (PC Music 2018) including an arrangement of the Polish traditional song "Byl Sobie Krol" (released under the title "Marzipan"), and with Charli XCX on Pop 2 (2017) on tracks "Tears (feat. Caroline Polachek)" and "Delicious (feat. Tommy Cash).
 Links: a. Danny L Harle b. Dev Hynes c. Beyoncé (album) d. Charli XCX

Ex Output:
b


Ex Input:
Question: How many stars are in the Milky Way Galaxy? Passage:Although the UKST was originally used to take photographs of the sky, traditional photographic glass (and film) became largely superseded by large electronic CCD detectors in the late 1990s, and after 2000 the UKST was used mostly for multi-object spectroscopy with the 6 degree Field (6dF) instrument. 6dF uses a robot to position up to 150 optical fibres on a metal plate mounted at the focal plane of the UKST, which then carry light from the targets to a spectrograph which sits on the floor of the dome. The 6dF Galaxy Survey (6dFGS), a redshift survey of 120,000 infrared-selected galaxies was completed in 2005, and from 2003–2013 the UKST then carried out the RAdial Velocity Experiment (RAVE) to measure the radial velocities and metallicities of around to 0.5 million stars in the Milky Way Galaxy.
 Links: a. Metallicity b. Redshift survey c. Milky Way d. Metallicity

Ex Output:

c