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 plays the sergeant. in full metal jacket?" whose answer is Ronald Lee Ermey.
Each document should contain about 30 words, and these documents should contain useful information.

Query: actor who played sergeant in full metal jacket
Useful Output:

Doc 1: R. Lee Ermey, a former Marine who made a career in Hollywood playing hard-nosed military men like Gunnery Sgt. Hartman in Stanley Kubrick's “Full Metal Jacket,
Doc 2: Ronald Lee Ermey was an American actor and Marine corps drill instructor. He achieved fame when he played Gunnery Sergeant Hartman in the 1987 film Full Metal
Doc 3: R. Lee Ermey, best known for playing the terrifying drill sergeant in Full Metal Jacket, has died at the age of 74.
Doc 4: R. Lee Ermey, who made an acting career out of his ability to bring stern military careerists to life, has died at age 74.
Doc 5: Ronald Lee Ermey, the actor who played Sergeant Hartman in the movie 'Full Metal Jacket', a real soldier himself? His acting is really convincing.