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: "what is the average annual dose of radiation?" whose answer is 3.01.
Each document should contain about 30 words, and these documents should contain useful information.

Query: average annual dose of radiation
Useful Output:

Doc 1: The annual average dose per person from all natural and man-made sources is about 620 mrems. Consequently, to protect health and safety, the
Doc 2: On average, Americans receive a radiation dose of about 0.62 rem (620 millirem) each year. Half of this dose comes from natural background radiation.
Doc 3: On average, Americans receive a radiation dose of about 0.62 rem (620 millirem) each year. Half of this dose comes from natural background
Doc 4: The annual limit for radiation exposure for a member of the public is 1 mSv per annum or 1000 μSv per annum.
Doc 5: The average annual radiation dose for Americans is estimated at 620 mrem per person. Many people receive more than this, although rarely are these higher