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 nba institute the shot clock?" whose answer is 1954–55.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did the nba institute the shot clock
Useful Output:

Doc 1: On April 22, 1954, facing a scoring drought of epic proportions, NBA owners voted to implement a 24-second shot clock. The decision changed the
Doc 2: In 1954, the National Basketball Association (NBA) faced a problem—teams leading late in games would hold on to the ball, literally for minutes
Doc 3: We have two related stories today, first about the lowest scoring game in NBA history, which directly leads into the invention of the shot clock
Doc 4: The American Basketball Association also adopted a 30-second clock when it launched in 1967-68, switching to the NBA's 24-second length for its
Doc 5: But pro basketball reinvented itself in 1954, promoting a crowd-pleasing athleticism by adopting a simple yet brilliant idea: the shot clock.