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: ""Chocolate Salty Balls (P.S. I Love You)" is a song from "South Park" performed by a character that is voiced by who?" whose answer is Isaac Hayes.
Each document should contain about 30 words, and these documents should contain useful information.

Query: voice actor of the character who performs "Chocolate Salty Balls (P.S. I Love You)" in South Park
Useful Output:

Doc 1: The song “Chocolate Salty Balls (P.S. I Love You)” was released as a single in the U.K. in 1998 to support Chef Aid: The South Park Album (a
Doc 2: The only real voice of reason in South Park is deep and unmistakably black.  There's "Chocolate Salty Balls (P.S. I Love You)," a '70s funk jam
Doc 3: Chef (4)–, Chocolate Salty Balls (P.S. I Love You) ; Eric Cartman With Kyle Braslavsky* & Mr. Garrison–, O Holy Night (Snippet)
Doc 4: Home 1998 90s Chef Dec14 Jan2 South Park Chef - Chocolate Salty Balls (P.S. I Love You)  The song's vocals are performed by Isaac Hayes, the voice actor for
Doc 5: "Chocolate Salty Balls (P.S. I Love You)" is a 1998 song from the animated comedy TV series South Park, performed by the character Chef and featured on the