instruction:
In this task, you're given passages that contain mentions of the quantity of a particular object and are supposed to find out the answer for a given question. Craft one correct answer to the question given in input. Make sure your correct answer is consistent with the context, and properly gives the exact number relating to the query.
 In your answer, use as few words as possible from the given context. To be less repetitive, please vary your language for each question.
question:
Sentence: About 80% of undergraduates and 20% of graduate students live on campus. The majority of the graduate students on campus live in one of four graduate housing complexes on campus, while all on-campus undergraduates live in one of the 29 residence halls. Because of the religious affiliation of the university, all residence halls are single-sex, with 15 male dorms and 14 female dorms. The university maintains a visiting policy (known as parietal hours) for those students who live in dormitories, specifying times when members of the opposite sex are allowed to visit other students' dorm rooms; however, all residence halls have 24-hour social spaces for students regardless of gender. Many residence halls have at least one nun and/or priest as a resident. There are no traditional social fraternities or sororities at the university, but a majority of students live in the same residence hall for all four years. Some intramural sports are based on residence hall teams, where the university offers the only non-military academy program of full-contact intramural American football. At the end of the intramural season, the championship game is played on the field in Notre Dame Stadium. 
Question: How many student housing areas are reserved for Notre Dame's graduate students?
answer:
four


question:
Sentence: The Rev. Theodore Hesburgh, C.S.C., (1917–2015) served as president for 35 years (1952–87) of dramatic transformations. In that time the annual operating budget rose by a factor of 18 from $9.7 million to $176.6 million, and the endowment by a factor of 40 from $9 million to $350 million, and research funding by a factor of 20 from $735,000 to $15 million. Enrollment nearly doubled from 4,979 to 9,600, faculty more than doubled 389 to 950, and degrees awarded annually doubled from 1,212 to 2,500. 
Question: How many faculty members were at Notre Dame when Hesburgh left the role of president?
answer:
950


question:
Sentence: The last opus number that Chopin himself used was 65, allocated to the Cello Sonata in G minor. He expressed a deathbed wish that all his unpublished manuscripts be destroyed. At the request of the composer's mother and sisters, however, his musical executor Julian Fontana selected 23 unpublished piano pieces and grouped them into eight further opus numbers (Opp. 66–73), published in 1855. In 1857, 17 Polish songs that Chopin wrote at various stages of his life were collected and published as Op. 74, though their order within the opus did not reflect the order of composition. 
Question: How many unfinished pieces did Julian Fontana make into eight more opus numbers?
answer:

23