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 apple iphone come out?" whose answer is On June 29, 2007.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did the first apple iphone come out
Useful Output:

Doc 1: June 2007: The first generation iPhone hits the U.S. market. Announced in January 2007, the original iPhone was introduced by Steve Jobs as a
Doc 2: The first iPhone was released on June 29, 2007, in the United States. It was announced earlier that year on January 9, 2007, by Steve Jobs at
Doc 3: Check out Paperlike here: https://paperlike.com/appleexplained/2410. Apple's original iPhone came out in 2007. And in the seventeen years
Doc 4: The original iPhone reached the market on June 29, 2007. In the U.S. it was priced at $499 and $599, for 4GB and 8GB models, respectively, along
Doc 5: The first iPhone was unveiled at Macworld 2007 and released later that year. By the end of 2009, iPhone models had been released in all major markets.