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: "the constitutional amendment limiting the president to only two elected terms is the?" whose answer is 22nd Amendment.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when was the two-term limit for president added to the us constitution
Useful Output:

Doc 1: Less than two years later, on March 21, 1947, the 22nd Amendment to the Constitution was approved by the necessary two-thirds vote in each house
Doc 2: The 22nd Amendment of the United States Constitution (1951) explicitly prohibits individuals from being elected as President more than twice.
Doc 3: The 22nd Amendment to the US Constitution, ratified on 27 February 1951, limits a president to two elected terms. It also includes stipulations
Doc 4: Amendment Twenty-two to the Constitution was ratified on February 27, 1951. It establishes term limits on those elected president.
Doc 5: When Did Term Limits For President Start? Have you ever wondered about the history of presidential term limits in the United States?