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 has won the mens singles french open tennis tournament 2018?" whose answer is Rafael Nadal.
Each document should contain about 30 words, and these documents should contain useful information.

Query: men's singles french open 2018 winner
Useful Output:

Doc 1: Rafael Nadal has won the 2018 French Open, besting Dominic Thiem in the finals, 6-4, 6-3, 6-2. Nadal now has 11 titles on the clay of Roland Garros.
Doc 2: Get the full Roland-Garros 2018 Men's Singles schedule here. Eurosport brings you today's order of play, real-time results and all of the latest Tennis
Doc 3: Live at Roland-Garros - Preview of the Men's singles final | Roland-Garros 2018 - Find us live at 2 p.m. Paris time. Visit Roland Garros'
Doc 4: Rafael Nadal, a Spanish professional tennis player, claimed his 11th French Open title on June 10, 2018. In the Men's singles final in Paris
Doc 5: 2018 French Open Bracket: Men's Singles. Men's Singles, Women's Singles  19-year-old Jakub Mensik stuns Novak Djokovic to win Miami Open. Jakub Mensik