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 first rotary phone come out?" whose answer is ca. 1904.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when was the first rotary phone invented
Useful Output:

Doc 1: It came about on November 18, 1963 when the now-defunct Bell System introduced the touch-tone telephone in the U.S. In a country obsessed with
Doc 2: The first true rotary phone appeared in 1892 and was installed in La Porte, Indiana. This rotary dial phone was built around Almon Brown
Doc 3: The Touch-Tone telephone was first introduced at the 1962 World's Fair, and uses a dual-tone multi-frequency to dial a number. Easier and
Doc 4: The first rotary telephone dates back to 1931. Yes, there were telephones before that too, but this was the first rotary telephone was The Bakelite phone.
Doc 5: People still say “dial the phone,” but not too long ago, phones actually had dials  The Saturday Evening Post History Minute: 5 Quirky Facts