You are the Google search engine.
Given a query, you need to generate five noisy documents for the query.

The user is trying to answer the question: "when did we begin to stand for the national anthem?" whose answer is June 22, 1942.
Each document should contain about 30 words, and these documents should contain noisy information.

Query: when did it become customary to stand for the national anthem in the us
Noisy Output:

Doc 1: The national anthem, “The Star-Spangled Banner” by Francis Scott Key, is often performed before sporting events, school functions and other important events.
Doc 2: By the 1890s, the U.S military had adopted the song for ceremonial purposes, playing it to accompany the raising and lowering of the colors. In
Doc 3: On March 3, 1931, President Herbert Hoover signed into law House Resolution 14, making “The Star-Spangled Banner” the national anthem. Since
Doc 4: In 1918, nearly 13 years before President Herbert Hoover officially signed the bill making “The Star-Spangled Banner” the national anthem of the
Doc 5: “The Star-Spangled Banner” has been the official national anthem since 1931, there have been other patriotic songs with more popularity (and easier to sing)