You will be given a definition of a task first, then some input of the task.
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.

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.
Output:
Who does the boy who can sense terminal illness go to apprentice for?