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 did the modern era of basketball start?" whose answer is June 6, 1946.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did the modern era of basketball start
Useful Output:

Doc 1: The 1980s are generally regarded as the beginning of the modern era. The league added a three-point line in 1979, instituted its 16-team
Doc 2: John Wall makes his GameTime debut in studio, and dips into the current player pool to create the perfect point guard.
Doc 3: James Naismith invented the game in 1891. Senda Berenson, known as the “Mother of Women's Basketball,” adapted Naismith's rules in 1892 to create a more refined
Doc 4: This contrast in the style of game between the two eras can be traced back to the NBA introducing the "No hand check" rule in the mid-2000's.
Doc 5: I think the significant era markers are shotclock rule change (1954), 3-pt line rule change (1980), and handcheck/illegal defense rule change (2003).