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: "Charles Hutchison and William K. Howard were simultaneously active in the film industry between what years?" whose answer is 1921 to 1946.
Each document should contain about 30 words, and these documents should contain useful information.

Query: William K. Howard film career years
Useful Output:

Doc 1: He made a record-breaking trip through the meanest part of the country selling the worst set of pictures ever released by a film company before or since.
Doc 2: This work is in the public domain in the United States because it was published (or registered with the US Copyright Office) before January 1, 1930.
Doc 3: Howard has taught film here in Winnipeg for many years, initially at the University of Manitoba and now at the University of Winnipeg, and
Doc 4: A sampling of the works of William K. Howard, a seriously neglected figure. On this evidence, perhaps a minor figure, but one who deserves to be remembered.
Doc 5: William K. Howard was a film director, writer and producer. Howard began his work in Hollywood as an assistant director on the 1920 release The Adorable Savage.