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 is the little girl who dances for sia?" whose answer is Madison Nicole Ziegler.
Each document should contain about 30 words, and these documents should contain useful information.

Query: little girl dancing for Sia
Useful Output:

Doc 1: I've read a lot of comments and speculations that Maddie and Sia's relationship is inappropriate and strange, and I completely 100% agree.
Doc 2: Her name is Madison Nicole Ziegler, but she's commonly known as Maddie Ziegler. · This is Maddie for the “No new friends” music video. She is a
Doc 3:  she started working with Sia  dancer and there would be other girls in the video, too. Yeah. And I thought Sia would be in the video.
Doc 4: Maddie Ziegler first became famous as one of the girls at the Abby Lee Dance  Ziegler has danced in music videos for Sia and has even
Doc 5: SIA opened doors for the Zieglers that not even Abby or Dance Moms could. But in order to get ahead she exploits her kids (mainly Maddie) into