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 sings you say he's just a friend?" whose answer is Biz Markie.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who sings you say he's just a friend
Useful Output:

Doc 1: “Just a Friend” being such a reflection of Markie's essence surely stems from the fact that he was the song's primary writer, along with its producer Cool V.
Doc 2: Biz Markie - Just a Friend (Lyrics) · Comments.
Doc 3: Biz Markie, who fortified the humor-and-hijinks school of hip-hop by taking it worldwide with his 1989 hit "Just a Friend," died Friday at the age of 57.
Doc 4: The same time Biz Markie was recording “Just a Friend”, A Tribe Called Quest was working on their debut album People's Instinctive Travels and
Doc 5: The Legacy of "Just a Friend" by Biz Markie (YOU GOT WHAT I NEED) · Comments10.