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 us quit making silver coins?" whose answer is July 23, 1965.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did the us stop producing silver coins
Useful Output:

Doc 1: From the day the U.S. Mint began making silver coins in 1794 to 1964, most dimes, quarters, and half dollar coins minted in the United States
Doc 2: This set the stage for the complete elimination of silver from our coinage by the end of 1964. It was then that the U.S. stopped making silver
Doc 3: Silver quarters were discontinued in 1965 under the Coinage Act of 1965. Under this law, US mints were required to stop including real silver in United States
Doc 4: Junk silver coins were produced by the United States Mint until 1965 and are 90 percent silver. These coins can have nostalgic value for
Doc 5: The US Treasury quit making dimes and quarters of silver way back in 1964. Here's the deal. In the early 1960s, coins became scarce.