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 18 become the age to vote?" whose answer is 1971.
Each document should contain about 30 words, and these documents should contain useful information.

Query: voting age 18 history
Useful Output:

Doc 1: The Court held that it was unconstitutional for Congress to lower the voting age in state and local elections, and thus that provision was
Doc 2: Amendment Twenty-six to the Constitution was ratified on July 1, 1971. It lowered the voting age for all Americans to eighteen years.
Doc 3: The 26th Amendment, which lowered the voting age to 18, has roots in WWII history.
Doc 4: Twenty-Sixth Amendment. Section 1: The right of citizens of the United States, who are eighteen years of age or older, to vote shall not be denied or
Doc 5: The right of citizens of the United States, who are eighteen years of age or older, to vote shall not be denied or abridged by the United States or by any