generate questions: During the latter half of the 20th century, Washington University transitioned from a strong regional university to a national research institution. In 1957, planning began for the construction of the “South 40,” a complex of modern residential halls. With the additional on-campus housing, Washington University, which had been predominantly a “streetcar college” of commuter students, began to attract a more national pool of applicants. By 1964, over two-thirds of incoming students came from outside the St. Louis area.
When did Washington University begin construction of a complex of residential halls? {sep_token} What name was given to the new residential complex constructed at Washington University? {sep_token} How did the construction of the new residential complex at Washington University affect the student population? {sep_token} What proportion of students at Washington University came from outside the St. Louis area by 1964? {sep_token} When did Washington University transition to a national research institution? {sep_token}