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: "who is the first black quarterback to win the superbowl?" whose answer is Douglas Lee Williams.
Each document should contain about 30 words, and these documents should contain useful information.

Query: first black quarterback to win the Super Bowl
Useful Output:

Doc 1: Doug Williams traveled a long road, not to mention an atypical one, to become the first black quarterback to win a Super Bowl.
Doc 2: Jalen Hurts and Patrick Mahomes are among the eight Black quarterbacks who have started in a Super Bowl. Only four have won the big game.
Doc 3: Williams made history in 1988 when he became the first Black quarterback to win a Super Bowl, leading the then-Washington Redskins to a 42-10
Doc 4: Doug Williams became the first Black quarterback to start and win a Super Bowl in 1988. In different years, Steve McNair, Donovan McNabb
Doc 5: Mahomes and Lamar Jackson, the Raven's quarterback, have each won two Most Valuable Player awards in the last six years, the first Black