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: "Who coined the term for the type of song that Rapunzel sang in Disney's animated film "Tangled"?" whose answer is Lehman Engel.
Each document should contain about 30 words, and these documents should contain useful information.

Query: origin of the term folk song
Useful Output:

Doc 1: In the eastern United States, many folk songs have international origins. Settlers from England, Scotland, and Ireland helped shape the music of
Doc 2: In his 1938 definition of folk music and folklore study, Robert Winslow Gordon notes that folk songs are in a constant state of fluctuation and
Doc 3: The term “the folk” was first coined in the late eighteenth century by the German philosopher Johann Gottfried Herder (1744-1803). In Herder's
Doc 4: Folk comes from the German word 'volk' meaning 'the people' and folk music is often thought of as being the music belonging to 'the people'.
Doc 5: Folk music was originally defined as the music of the uncultured class of people. 'Folk' came from the German term volk, which means 'the people'. This type of