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: "who produces the most pistachios in the world?" whose answer is Iran.
Each document should contain about 30 words, and these documents should contain useful information.

Query: top pistachio producers in the world
Useful Output:

Doc 1: The leading pistachio producing countries include Iran, the United States, Turkey, and Syria. These nations dominate the pistachio industry due
Doc 2: Today's leading producers are the United States, Iran, Turkey, China, Syria, and Greece. 2. Where are pistachio grown commercially around the
Doc 3: The U.S. continues to lead the world in pistachio production and is forecast to reach 476,000 metric tons in 2020/21. This is attributable to it
Doc 4: **United States**: The United States is the largest producer of pistachios globally, with California being the primary growing region.
Doc 5: This statistic illustrates the harvested land area of pistachios worldwide in 2023, by leading country.