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 played in the 2015 college football national championship?" whose answer is Ohio State Buckeyes.
Each document should contain about 30 words, and these documents should contain useful information.

Query: 2015 College Football National Championship teams
Useful Output:

Doc 1: #1 Ohio State vs #13 Michigan Highlights | Week 14 | College Football 2019  Most UNDERRATED National Championship Game EVER || A Game to
Doc 2: With Oregon, Ohio State, the Alabama Crimson Tide and the Florida State Seminoles all making the inaugural College Football Playoff, fans were
Doc 3: Ohio State was the winner of the 2015 College Football National Championship after overcoming the Oregon Ducks 42-20 in front of 85,788 people
Doc 4: 2015 Alabama (14-1). The 2015 Tide finished by beating teams then-ranked No. 1 (Clemson), No. 2 (LSU) and No. 3 (Michigan State), and there's
Doc 5: Alabama became the first team to win three finals in the CFP era and secured its 18th national title overall. Additionally, it was head coach