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 wrote the song saturday in the park?" whose answer is Robert Lamm.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who wrote the song saturday in the park
Useful Output:

Doc 1: "Saturday in the Park" is a song written by Robert Lamm and recorded by the group Chicago for their 1972 album Chicago V. "Saturday in the
Doc 2: “Saturday in the Park” (as featured on 1972's Chicago V) was written in 1971 by Robert Lamm, who was inspired to write the song while the group was in New York
Doc 3: Robert Lamm, who wrote both songs, sings them and plays piano and organ. However, he's a white guy, although he probably listened to a lot of black R&B singers.
Doc 4: Robert Lamm wrote the song after experiencing a celebration in New York's Central Park on July 4, 1970…and the song appeared on the album, “
Doc 5: Chicago's Robert Lamm Shares Story Behind Writing 'Saturday In the Park,' Talks Ray Charles' Influence. As he prepares to be inducted into the