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 age limit to buy alcohol?" whose answer is 21.
Each document should contain about 30 words, and these documents should contain useful information.

Query: age limit to buy alcohol
Useful Output:

Doc 1: Around the world, the age when it's legal to purchase or be served most alcohol products varies from 13 in Burkina Faso to 25 in Eritrea.
Doc 2: Setting the legal age to 21 for buying alcohol has helped protect health by: · Fewer motor vehicle crashes · Less underage drinking.
Doc 3: Following the repeal of Prohibition, nearly all State laws restricting youth access to alcohol designated 21 as the minimum age for purchasing and consuming
Doc 4: Liquor can be sold by persons 18 to 20 years of age only in licensed establishments where selling or serving the intoxicating liquor is part of the minor's
Doc 5: Since 1984, the national minimum legal drinking age has been 21. Before 1984, each state had its own legal drinking age. States that don't