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 played cha cha in the movie grease?" whose answer is Annette Charles.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who played cha cha in the movie grease
Useful Output:

Doc 1: Annette Cardona — the “Grease” actress known for her role as Cha Cha DiGregorio — has been honored with an intersection naming that
Doc 2: John Travolta as Danny Zuko · Olivia Newton-John as Sandy Olsson · Jeff Conaway as Kenickie · Stockard Channing as Rizzo · Barry Pearl as Doody.
Doc 3:  actress, dancer, and educator best known for her role as Charlene "Cha-Cha" DiGregorio in the 1978 feature film Grease. She made several appearances on
Doc 4: Cast ; John Travolta as Danny Zuko; Olivia Newton-John ; Jeff Conaway as Kenickie · Kelly Ward ; Stockard Channing as Betty Rizzo · Dinah Manoff ; Eddie Deezen as
Doc 5: Remembering actress Annette Charles, who played “ChaCha” in the movie Grease, who died thirteen years ago today(March 5, 1948 - August 3, 2011).