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 i can only imagine by mercyme?" whose answer is lead vocalist Bart Millard.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who wrote the song i can only imagine by mercyme
Useful Output:

Doc 1: I wrote I Can Only Imagine after my father passed away with cancer.  Did you have any idea that the song would be what it became? Oh yes
Doc 2: Worship Leader's Alex MacDougall recently visited with Bart Millard, founding member of MercyMe, and author of the song, “I Can Only
Doc 3: The song has meant a lot to me over the years, and it really came out of a difficult season," shares MercyMe's Bart Millard. "It brought me a
Doc 4: In 2001, Christian rock band MercyMe released "I Can Only Imagine," the lyrics for which lead singer Bart Millard wrote in just ten minutes.
Doc 5: I Can Only Imagine Mercy Me Bart Millard Exclusive, MrRaulval, 2017-10-31, 0:06:27, 636+ (99%)