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 sings knock knocking on heaven's door?" whose answer is Bob Dylan.
Each document should contain about 30 words, and these documents should contain useful information.

Query: "knock knocking on heaven's door" artist
Useful Output:

Doc 1: Knock knock knocking on heaven's door, we partnered with saxophone  Art. Artist. No photo description available. Adrenaline Addiction
Doc 2: Knock knocking on heaven's door knock knocking on heaven's door knock knocking on heaven's door.  Artist. 󱙿. Philip Paz. 󱙿. Videos.
Doc 3:  knock knocking on heaven's door. Knock knock knocking on door Knock  ⚡️ON THA RIZE‼️ Rising #Atlanta Artists @gorillazoe Ft
Doc 4: Resistance Song for Day 58 - "Knockin' on Heaven's Door" by Bob Dylan  Knock, knock, knocking on heaven's door. Knock, knock, knocking on
Doc 5: Enjoy Randy Crawford's rendition of the classic song 'Knock-Knock-Knocking on Heaven's Door' in this soulful performance.