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: "when was the last time cleveland browns won a championship?" whose answer is 1989.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did the cleveland browns last win a championship
Useful Output:

Doc 1: Cleveland Browns win the 1950 NFL Championship. Cleveland Browns•6.3K views · 5:21. Go to channel · What's The Best Program In College Football
Doc 2: The Cleveland Browns have 4 wins in NFL championships all-time.
Doc 3: Despite boasting eight professional championships - four in the All-America Football Conference and four in the NFL - the Cleveland Browns
Doc 4: Hall of Fame Quarterback Otto Graham recounts his experience in the 1950 NFL Championship Game against the Los Angeles Rams. Graham led the Browns to a
Doc 5: Established in 1944, the Browns played in the All American Football Conference from 1946-1949, winning all the championships during their