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: "What is the nickname of the Argentinian tennis player who once lost to Janko Tipsarević?" whose answer is Pico.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Janko Tipsarević lost to Argentine tennis player
Useful Output:

Doc 1: Djokovic said after losing 3-6, 6-3, 6-3 to fellow Serb Janko Tipsarevic in their final group match.
Doc 2: Top-seeded Janko Tipsarevic lost in the second round of the Power Horse Cup on Wednesday, falling 7-6 (1), 6-1 to Argentine qualifier Guido Pella.
Doc 3: Tipsarevic is now ranked world number 453 after missing the entire 2018 season due to surgery on both harmstring tendons and suffered from many
Doc 4: The triple Grand Slam titleholder beat the seventh-seeded Tipsarevic 6-1, 7-6 (8/6) but only escaped from set point down at 5-6 in the tie-
Doc 5: Tipsarevic won the dead rubber against Juan Monaco, who retired after dropping the first set 6-2 – a result that had no effect on the Argentina