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 plays johnny's dad in the movie sing?" whose answer is Peter Serafinowicz.
Each document should contain about 30 words, and these documents should contain useful information.

Query: cast of sing movie Johnny's dad
Useful Output:

Doc 1: Matthew McConaughey As Buster Moon · Reese Witherspoon As Rosita · Scarlett Johansson As Ash · Bono As Clay Calloway · Taron Egerton As Johnny · Tori
Doc 2: Meet the voices behind each animated performer. Scarlett Johansson, Tori Kelly, Nick Kroll and Taron Egerton enter Matthew McConaughey's singing competition.
Doc 3: Peter Serafinowicz plays Big Daddy, a mobster gorilla and Johnny's father; Jennifer Saunders plays Nana Noodleman, a sheep and a famous singer
Doc 4: Peter Serafinowicz as "Big Daddy" Marcus​​ In Sing and its sequel, he voices Johnny's dad Marcus, who was imprisoned for an attempted heist, but
Doc 5: final performance while his father (Peter Serafinowicz) watches from prison. FILM DESCRIPTION: When a koala impresario (voiced by Matthew