user: Extract the number of fights Hunt won by knockout or TKO in the below text and the year he had the most knockout wins

assistant: Mark Hunt won four fights via knockout/TKO with two of these wins coming in 2015

user: What is Chess?

assistant: Chess is a board game played by two players where there are multiple pieces for each person/side, that can be moved in certain ways on the board and can capture other pieces. The end goal is to checkmate the King piece. This game requires a lot of smart intelligent strategy.

user: Which band sang No Sleep Till Brooklyn?

assistant: The Beastie Boys