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: "The winner of season 21 of "Dancing with the Stars" (U.S.) is a star of a web series, Where this series was filmed ?" whose answer is Australia.
Each document should contain about 30 words, and these documents should contain useful information.

Query: winner of dancing with the stars season 21
Useful Output:

Doc 1: Bindi Irwin, the daughter of Terri Irwin and the late Crocodile Hunter star Steve Irwin, and her dance partner, Derek Hough, won the 21st season
Doc 2: Irwin got a boost being paired with Derek Hough, who has now won an incredible six times. That man always guarantees extra votes for whatever
Doc 3: Bindi Irwin and Derek Hough were crowned Season 21 champions during the two-hour season finale of Dancing with the Stars. Photo Credit: ABC/
Doc 4: Comments60 · Top 20 Best Dancing with the Stars Disney Night Performances · Bindi and Chandler's Wedding Ceremony | Crikey! · Bindi Irwin & Derek
Doc 5: Bindi Irwin. ABC's "Dancing With the Stars" - Season 21 - Finale - Day Two. Adam