What is the fine-grained topic of the following text: Coach Blake Shelton has a difficult decision when Dave Fenley croons Lionel Richie’s “Stuck on You” with Kameron Marlowe, rocking Bob Marley’s “I Shot the Sheriff,” but thankfully Blake chooses Dave Fenley as the winner of the knockout round while Adam Levine steals Kameron. Only return the topic.
"The Voice" singing competition knockout round between Dave Fenley and Kameron Marlowe.