Question: The 2015 Ulster Club Senior Football Championship had reigning champions of which Gaelic club?
Sentence (from "Slaughtneil GAC"): Robert Emmet's Gaelic Athletic Club Slaughtneil (Irish: "CLG Roibeard Éiméid Sleacht Néill" ) is a Gaelic Athletic Association club based on the townland of Slaughtneil, County Londonderry, Northern Ireland.
Relevant evidence: Yes