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 do purple martins go in the winter time?" whose answer is South America.
Each document should contain about 30 words, and these documents should contain useful information.

Query: winter habitat of purple martins
Useful Output:

Doc 1: The Purple Martin migrates to the Amazon basin in winter. Its winter range extends into Ecuador but does not seem to ascend far up the Andean foothills.
Doc 2: While all Purple Martins migrate to South America for the winter, Desert Purple Martin utilize different movement and timing strategies.
Doc 3: Purple martins are rare migratory birds that winter in South America and move north into the U.S. and Canada in the summer. According to the
Doc 4: The most important consideration in attracting Purple Martins is habitat. They require a relatively open area, preferably adjacent to a pond or lake.
Doc 5: They are frequently found in the Great Lakes region, preferring to breed in the Northern Hemisphere and winter in the Southern Hemisphere. An