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 first episode of the big bang theory aired?" whose answer is September 24, 2007.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when was the first episode of the big bang theory aired
Useful Output:

Doc 1: The flagship series, created by Lorre and Bill Prady, aired for 12 seasons on CBS. The new Big Bang, like the flagship and prequel series, hails
Doc 2: It's hard to believe that The Big Bang Theory's first episode premiered 13 years ago in 2007. It was the start of 12 seasons and over 270
Doc 3: Season 1 Episode 1, September 24, 2007. Upvote
Doc 4: The show premiered on September 24, 2007, and was picked up for a full 22-episode season on October 19, 2007. The show is filmed in front of a live audience,
Doc 5: Since it is still in development, the premiere is nowhere close to appearing on the horizon. But unlike all the other Big Bang Theory shows,