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: "Hanjin Group chairman Cho Yangho founded what airline alliance in June 2000 that consists of 20 carriers from five continents?" whose answer is SkyTeam.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Star Alliance founding year
Useful Output:

Doc 1: It's almost 25 years for the world's largest - the Star Alliance, founded by five airlines in Frankfurt, Germany, on May 14, 1997.
Doc 2: The alliance was established in 1997 based on a customer value proposition of global reach, worldwide recognition, and seamless service. It
Doc 3: Star Alliance was founded in May 1997 by Air Canada, Lufthansa, Scandinavian Airlines (SAS), Thai Airways, and United Airlines. Headquartered in
Doc 4: The Star Alliance network was established in 1997 as the first truly global airline alliance, based on a customer value proposition of global
Doc 5: The Star Alliance network was established in 1997 as the first truly global airline alliance, based on a customer value proposition of global