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.
Avoid questions that can be answered correctly without actually understanding the paragraph. Avoid questions that do not link phrases referring to the same entity. Avoid questions that have multiple answers.

For each of your questions the answer should be one or more phrases in the paragraph. The answer for each question should be unambiguous.
Q: Context: The Rev. John J. Cavanaugh, C.S.C. served as president from 1946 to 1952. Cavanaugh's legacy at Notre Dame in the post-war years was devoted to raising academic standards and reshaping the university administration to suit it to an enlarged educational mission and an expanded student body and stressing advanced studies and research at a time when Notre Dame quadrupled in student census, undergraduate enrollment increased by more than half, and graduate student enrollment grew fivefold. Cavanaugh also established the Lobund Institute for Animal Studies and Notre Dame's Medieval Institute. Cavanaugh also presided over the construction of the Nieuwland Science Hall, Fisher Hall, and the Morris Inn, as well as the Hall of Liberal Arts (now O'Shaughnessy Hall), made possible by a donation from I.A. O'Shaughnessy, at the time the largest ever made to an American Catholic university. Cavanaugh also established a system of advisory councils at the university, which continue today and are vital to the university's governance and development
A:
Around the time that Rev. Cavanaugh became president of Notre Dame by how much did the undergrad student body of Notre Dame increase?