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 did the demon voice in the exorcist?" whose answer is Carlotta Mercedes Agnes McCambridge.
Each document should contain about 30 words, and these documents should contain useful information.

Query: voice actor demon The Exorcist
Useful Output:

Doc 1: The Truth Behind the Hidden Demon in The Exorcist. A deep  voice supposedly says, “I buried Paul.” A generation before us, that short
Doc 2: William Friedkin Had Trouble Creating the Devil's Voice · Mercedes McCambridge Worked With Priests To Find Her “Inner Demon” · How Did William
Doc 3: Mercedes McCambridge and William Friedkin recall the creation of the voice of the Demon from THE EXORCIST.
Doc 4: Meet the voice of the demon in The Exorcist. Actor Mercedes McCambridge and director William Friedkin explain the ingredients that went
Doc 5: Based on the trailer, the closest we'll have to a traditional demon vanquisher is Chris MacNeil (once again played by Ellen Burstyn).