Given the task definition and input, reply with output. In this task, you are given a context tweet and an answer. Your job is to generate a question for the given answer based on the given tweet paragraph. Note that your question should be answerable based on the given tweet, and the answer to your question should be the given answer.

Context: He was let go when they realized he was a college student and not a criminal ( he was leaving the library!) He's shaken, but I'm fuming! Charles M. Blow (@CharlesMBlow) January 25, 2015 Answer: leaving the library.
what was the student doing when he was accosted?