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 has been the host of the tonight show?" whose answer is Steve Allen.
Each document should contain about 30 words, and these documents should contain useful information.

Query: hosts of the tonight show
Useful Output:

Doc 1: The first host was Steve Allen, followed by Jack Paar in 1957. Parr passed the reins on to Johnny Carson in 1962, and he reigned as the king of late night for
Doc 2: Jay Leno hosted NBC's "The Tonight Show with Jay Leno" from 1992 until 2009.  Leno took over hosting duties from Johnny Carson in May 1992, and
Doc 3: Host Bio. Emmy Award and Grammy Award winner Jimmy Fallon brought NBC's "The Tonight Show" back to its New York origins when he launched "The Tonight Show
Doc 4: You know Johnny Carson, Jay Leno, and Jimmy Fallon, but do you know all the other hosts of "The Tonight Show"? This iconic late night talk
Doc 5: After Johnny Carson stepped down as the host of NBC's The Tonight Show in 1992, Jay Leno filled the coveted post — a shock to those who