instruction:
In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
question:
Passage: It is the Dark Ages, and the Church is fighting against 'black magic'. The medical knowledge of Greek physicians like Hippocrates and Galen had been lost to the medicine of medieval Europe. In 11th-century England, travelling barber surgeons attempted to supply medical care to the ordinary population, often at the risk of the Church persecuting them for witchcraft.
Robert Cole has an extraordinary gift, where he can sense when someone left untreated has a terminal illness. He notices this for the first time when he feels it as a little boy when his sick mother is dying of appendicitis, a disease of which he was unaware. The young orphan joins an itinerant barber-surgeon who calls himself Barber. Barber teaches him the basics of medieval medicine, with services such as cupping therapy, bloodletting, and dental extraction. Even as an apprentice Rob recognizes the limitations of these simple practices. When Barber suffers from a cataract, Rob consults a Medicus for him. This Jewish doctor completely heals Barber of his cataracts. He learns a little bit of Jewish culture. He speaks with two children, Jesse and Benjamin. There, Rob sees for the first time a world map, and learns of the famous Ibn Sina, who teaches medicine in distant Persia. So he decides to train there to become a physician. During the Islamic Golden Age, the medicine in the medieval Islamic world is far more advanced than in Europe. The doctor, scientist and philosopher Ibn Sina teaches in Isfahan, the most important school for aspiring practitioners in the world at that time.
answer:
Who does the boy who can sense terminal illness go to apprentice for?


question:
Passage: The film takes place in Minnesota, in 1990. Detective Bruce Kenner investigates the case of John Gray, who admits to sexually abusing his 17-year-old daughter Angela but has no recollection of the abuse. They seek the help of Professor Kenneth Raines to use recovered-memory therapy on John Gray to retrieve his memories, and come to suspect that their colleague Detective George Nesbitt is involved. They detain him but fail to find evidence against him. Detectives suspect a satanic cult is involved because of Angela's testimony, in which Angela says that she was abused by people in masks and someone took pictures of it.
Bruce and Kenneth meet Angela's estranged brother Roy Gray to inquire about why he left the house. Using the regression technique on him, he recalls hooded figures entering his room while he was young. Bruce and Kenneth suspect Roy's grandmother, Rose Gray, has some involvement but find nothing after a search of her house.
Meanwhile, Bruce begins having nightmares involving satanic rituals. Angela tells him that the cult is out to kill her as she has shown her demonic mark to him and that he is in danger as well. She tells him that her mother received miscellaneous calls and saw strange figures staring at her in the street before she met with an accident. Bruce starts to experience the same things and his nightmares increase in intensity.
answer:
What is the name of John Gray's mother?


question:
Passage: From 1916, Nielsen taught at the Royal Academy where he became director in 1931, shortly before his death. He also had private students in his earlier days in order to supplement his income. As a result of his teaching, Nielsen has exerted considerable influence on classical music in Denmark. Among his most successful pupils were the composers Thorvald Aagaard, remembered in particular for his songs, Harald Agersnap, both a conductor and orchestral composer, and Jørgen Bentzon who composed choral and chamber music mainly for his folk music school (Københavns Folkemusikskole). Among his other students were the musicologist Knud Jeppesen, the pianist Herman Koppel, the academy professor and symphony composer Poul Schierbeck, the organist Emilius Bangert who played at Roskilde Cathedral, and Nancy Dalberg, one of Nielsen's private students who helped with the orchestration of Aladdin. Nielsen also instructed the conductor and choirmaster Mogens Wöldike, remembered for his interpretations of Baroque music, and Rudolph Simonsen, the pianist and composer who became director of the Academy after Nielsen's death.The Carl Nielsen Society maintains a listing of performances of Nielsen's works, classified by region (Denmark, Scandinavia, Europe apart from Scandinavia and outside Europe) which demonstrates that his music is regularly performed throughout the world. The concerti and symphonies feature frequently in these listings.
The Carl Nielsen International Competition commenced in the 1970s under the auspices of the Odense Symphony Orchestra. A four-yearly violin competition has been held there since 1980. Flute and clarinet competitions were later added, but these have now been discontinued. An international Organ Competition, founded by the city of Odense, became associated with the Nielsen competition in 2009, but from 2015 will be organized separately, based in Odense Cathedral.
answer:

What is the last name of the person that taught Knud Jeppesen?