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 held more roles in the film industry, Mervyn LeRoy or Mack Sennett?" whose answer is Mervyn LeRoy.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Mervyn LeRoy career roles
Useful Output:

Doc 1: Long before Billy Wilder, LeRoy was one of the most successful director-producers in Hollywood, but since his production activities were more "
Doc 2: He began by producing the films of other directors: Robert Sinclair's Dramatic School (1938), W.S. Van Dyke's Stand Up and Fight (1939), Eddie
Doc 3: LeRoy directed the musical ''Gold Diggers of 1933,'' the biographical ''Madame Curie,'' the wartime drama ''Thirty Seconds Over Tokyo,'' the
Doc 4: He was nominated in 1943 for Best Director for Random Harvest. and also in 1940 as the producer of The Wizard of Oz. In addition, he received an
Doc 5: Mervyn LeRoy was an American motion-picture director whose wide variety of films included dramas, romances, epics, comedies, and musicals.