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: "total number of nuclear power plants in the world?" whose answer is 451.
Each document should contain about 30 words, and these documents should contain useful information.

Query: total number of nuclear power plants in the world
Useful Output:

Doc 1: At the end of December 2019, the global operating nuclear power capacity was 392.1 GW(e), comprising 443 operational nuclear power reactors in 30 countries.
Doc 2: Data for 2020. Total world nuclear electricity generation, 2,591 billion kWh. Nuclear percentage share of total world electricity generation
Doc 3: In 2022, as reported by the IAES, over 393.8 GW(e) of operational nuclear power capacity was available through 438 reactors across 32 countries.
Doc 4: According to the U.S. Energy Information Administration, in the United States, as of January 1, 2022, there are 55 commercially operating
Doc 5: And in total there are currently 449 reactors supplying about 11% of the world's energy. So where are they? Bar chart showing the distribution