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 is the first nfl game played this season?" whose answer is September 6, 2018.
Each document should contain about 30 words, and these documents should contain useful information.

Query: NFL season start date 2023
Useful Output:

Doc 1: The season began on September 7, 2023, with defending Super Bowl LVII champion Kansas City falling to Detroit in the NFL Kickoff Game, and the regular season
Doc 2: The new league year will begin on Wednesday, March 15 at 4 p.m. ET, and teams will be able to designate franchise and transition tags from Feb.
Doc 3: The 2023 NFL season officially begins with the Kickoff Game on Thursday, Sept. 7. Who's playing in the 2023 NFL Kickoff Game?
Doc 4: NFL announces 2023 schedule release date · Browns fans should tune in Thursday at 8 p.m. for the official announcement of the 2023 schedule.
Doc 5: The 2023 NFL Schedule powered by AWS will be released on NFL Network, NFL.com, the NFL app and NFL+ on Thursday, May 11 at 8 pm ET.