You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "Where was the author of "A Mercy" a professor emerita at?" whose answer is Princeton University.
Each document should contain about 30 words, and these documents should contain useful information.

Query: author of A Mercy
Useful Output:

Doc 1: To do this takes a powerful guide, a writer like Toni Morrison, whose gift takes us into this world with A Mercy. Morrison has perhaps delivered her greatest
Doc 2: About Toni Morrison. Toni Morrison was awarded the Nobel Prize in Literature in 1993. She was the author of many novels, including The Bluest
Doc 3: Toni Morrison is the author of eleven novels, from The Bluest Eye (1970) to God Help the Child (2015). She received the National Book Critics Circle Award, the
Doc 4: A Mercy is a visceral  Morrison's new book, A MERCY, is perhaps the perfect introduction to this Nobel Prize-winning author's
Doc 5: Toni Morrison's new novel A Mercy is the story of a slave girl whose mother gives her away to a stranger in a desperate attempt to secure her a better future.