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 carl perkins in walk the line?" whose answer is Johnny Holiday.
Each document should contain about 30 words, and these documents should contain useful information.

Query: actor who played carl perkins in walk the line
Useful Output:

Doc 1: Speaking of Waylon Jennings, in Walk the Line he's played by his real-life son Shooter Jennings. Upvote
Doc 2: Golden Globe winners Joaquin Phoenix and Reese Witherspoon star (and sing) as Johnny Cash and June Carter in this inspiring true story.
Doc 3:  Carl Perkins. James Mangold. Director, Writer. Gill Dennis. Writer. Top Billed Cast. Joaquin Phoenix. John R. Cash.
Doc 4: Most popular actor on Walk the Line. 32 Wikipedia views yesterday · Johnny Holiday. as Carl Perkins · Ridge Canipe. as Young J.R.. #16. Most popular actor on
Doc 5: Are you thinking of Luther Perkins? Luther was Cash's guitar player. Carl Perkins was a Sun Records artist in his own right. Upvote 1