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: "Which tennis player played in the Masters, Daniel Vacek or Yan Zi?" whose answer is Daniel Vacek.
Each document should contain about 30 words, and these documents should contain useful information.

Query: tennis player Daniel Vacek Masters
Useful Output:

Doc 1:  Daniel Vacek. “The most improved [part of his game] is that he believes in himself, much more than he did in the past,” Vacek told ATPTour.com.
Doc 2: Here, we look at the four youngest players to defeat an opponent in the top 10 of the ATP Rankings in a men's singles Grand Slam match.
Doc 3: Daniel Vacek. Prize money, US $3,790,105. Singles. Career record, 64–45. Career titles, 1. Highest ranking, No. 20 (3 March 2025). Current ranking, No. 20 (3
Doc 4: Daniel Vacek. Earnings, 4,493,804$. Tomas Machac is a professional tennis player from the Czech Republic, known for his dynamic playing style and promising
Doc 5: Daniel Vacek (54) is a tennis player from Czechia who has a career-high doubles ranking of No. 3. Click here for a full player profile.