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 won the mens singles at wimbleton 2018?" whose answer is Novak Djokovic.
Each document should contain about 30 words, and these documents should contain useful information.

Query: winner of men's singles wimbledon 2018
Useful Output:

Doc 1: Novak Djokovic won the Wimbledon 2018 Men's Singles title. He defeated Kevin Anderson in the final with a straight-sets victory: 6-2, 6-2, 7
Doc 2: Novak Djokovic defeated Kevin Anderson at Wimbledon on Sunday, 6-2, 6-2, 7-6 (7-3), winning his first Grand Slam title since the 2016 French Open.
Doc 3: Match highlights, analysis and text commentary as Novak Djokovic wins Wimbledon for the fourth time by beating Kevin Anderson.
Doc 4: Novak Djokovic is a grand slam champion for the first time since 2016 after a securing his fourth Wimbledon title with a straight-sets masterclass over South
Doc 5: The men's singles featured some memorable five-set matches in the closing stages, with none better than Rafael Nadal's thrilling victory over