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 wrote i heard it on the grapevine?" whose answer is Barrett Strong.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who wrote i heard it on the grapevine
Useful Output:

Doc 1: "I Heard it Through the Grapevine" was co-written by legendary songwriters and producers Norman Whitfield and Barrett Strong.
Doc 2: Barrett Strong, who sang "Money (That's What I Want") and wrote Motown hits like "War" and "I Heard It Through the Grapevine," has died at
Doc 3: Written by Jim “Bruiser” Krueger and performed with Dave Mason. Billy Dean covered it on his 1993 Fire in the Dark album and had more commercial
Doc 4: Norman Whitfield and Barrett Strong wrote the tune in 1966. Marvin Gaye was not the first Motown artist to record it. Smokey Robinson and
Doc 5: Strong had the idea for “I Heard It Through The Grapevine” one day when he was walking down Michigan Avenue in Chicago in 1966. He turned it