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 woman singing in gimme shelter?" whose answer is Merry Clayton.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who sings lead vocals in the rolling stones gimme shelter
Useful Output:

Doc 1: The movie features many backup singers, including Lisa Fischer, Merry Clayton, Tata Vega, Darlene Love and others, and goes well back in modern
Doc 2: The astounding 'back up' vocal (which I believe is an integral and 'lead vocal' part of the song) is performed by Merry Clayton. Pregnant, sick
Doc 3: In the now-classic Rolling Stones song "Gimme Shelter," the backup vocalist singing, rape, murder - it's just a shot away, is Merry Clayton. In
Doc 4: 00:00 Merry Clayton - studio version - Let It Bleed album - 1969 · 00:30 Lisa Fischer - Paradiso, Amsterdam - 1995 · 01:09 Lorelei Mcbroom -
Doc 5: Merry Clayton lent her voice to The Rolling Stones singing alongside Mick Jagger in "Gimme. The day after recording "Gimme Shelter," which