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 is the lead singer of the Ernesto Juan Castellanos produced group that was had ten songs i the top 10 UK Singles Chart?" whose answer is Mick Hucknall.
Each document should contain about 30 words, and these documents should contain useful information.

Query: lead singer of Doc Holliday
Useful Output:

Doc 1: Bruce Brookshire is well-known as songwriter/ singer/ guitarist for Doc Holliday for over 30 years and 13 albums is known to Southern Rock
Doc 2: DOC HOLLIDAY "City Night" (1983). DOC HOLLIDAY "City Night" (1983) Lead Vocals / Guitar • BRUCE BROOKSHIRE Guitar • RICK SKELTON Bass
Doc 3: Lead Vocals / Guitar • BRUCE BROOKSHIRE Guitar • RICK SKELTON Bass • JOHN SAMUELSON Keyboard • EDDIE STONE Drums • HERMAN DAVIS NIXON
Doc 4: Doc Holliday origin can be traced to 1971 when guitarist, lead singer and songwriter Bruce Brookshire formed the blues band called Roundhouse.
Doc 5: Bruce Brookshire and his brother Bob formed the blues band called Roundhouse. By the end of the decade Roundhouse would see the band rechristened Doc Holliday.