Teacher:This task is about creating an unanswerable question based on a given passage. Construct a question that looks relevant to the given context but is unanswerable. Following are a few suggestions about how to create unanswerable questions:
(i) create questions which require satisfying a constraint that is not mentioned in the passage
(ii) create questions which require information beyond what is provided in the passage in order to answer
(iii) replace an existing entity, number, date mentioned in the passage with other entity, number, date and use it in the question
(iv) create a question which is answerable from the passage and then replace one or two words by their antonyms or insert/remove negation words to make it unanswerable.
Teacher: Now, understand the problem? Solve this instance: Passage: Women remained segregated at Radcliffe, though more and more took Harvard classes. Nonetheless, Harvard's undergraduate population remained predominantly male, with about four men attending Harvard College for every woman studying at Radcliffe. Following the merger of Harvard and Radcliffe admissions in 1977, the proportion of female undergraduates steadily increased, mirroring a trend throughout higher education in the United States. Harvard's graduate schools, which had accepted females and other groups in greater numbers even before the college, also became more diverse in the post-World War II period.
Student:
During what period were women not banned from being admitted to Radcliffe?