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: "Ray Anderson was the first person to go 15 rounds against the pro boxer who fought in what two weight classes?" whose answer is light heavyweight and heavyweight.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Ray Anderson 15 rounds boxer
Useful Output:

Doc 1: Scoring was different than I expected. Expected a decision for Jake but not by that margin. Personally felt Anderson won 4/5 of those rounds.
Doc 2: Name: Ray Anderson ; Alias: Sugar Ray ; Birth Name: Ramon Anderson ; Hometown: Akron, Ohio, USA ; Birthplace: Anniston, Alabama, USA
Doc 3: In his last fight, on March 2, 1977, he was stopped in 4 rounds by Mike Rossman. Anderson went 1-10-4 in his last 15 contests, but the names of
Doc 4: On April 24, 1971 Bob Foster won a lopsided fifteen round decision over Ray Anderson to retain his championship.  In 1974, he was stopped in
Doc 5:  Anderson would lose a fifteen-round decision, but to his credit he was one of the few men that would last all 15 rounds against Foster. Here