Question: What current world champion goes to an amateur boxing club that operates from a gym on the Lancaster West Estate that Olympic gold medalist who held the IBF super-middleweight title since 2015, having previously held the British super-middleweight title from 2010 to 2011, and the European super-middleweight title from 2011 to 2012 goes to as well?
Sentence (from "Chris Eubank Jr."): He has held the IBO super-middleweight title since February 2017, having previously held the WBA interim and British middleweight titles between 2015 and 2016.
Relevant evidence: No