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 the song happy birthday come out?" whose answer is in 1912.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when was the song "Happy Birthday" first published
Useful Output:

Doc 1: The "happy birthday" lyrics first appeared in print in 1912, attributed to Preston Ware Orem and Mrs. R.R. Forman, but the words were probably
Doc 2: Curious Questions: Who wrote the Happy Birthday song? There are few  This song was printed in sheet-music form by Robert Coleman in 1924 and,
Doc 3: There is little dispute that in the 1890s the Hill sisters wrote the precursor to Happy Birthday, a song for Patty's kindergarten students they
Doc 4: The melody to “Happy Birthday to You” was first copyrighted in 1893 as “Good. Morning to All,” a song by sisters Mildred. J. Hill and Patty S.
Doc 5: In 1935, Jessica, who was working with publisher Clayton F. Summy Company, copyrighted and published "Happy Birthday to You." Lawsuits. In