As Betrayal and Sulfur said, gt. If no one had cc'd and sheriff hadn't stated his intentions, isp.
Situation:
You are cop. You don't speak all day even when mafia cc's your role, then you come back and drop 4 lines. Sheriff, tells you later he will lynch you and you still do not claim your role. He eventually hammers but you flip cop.
Is this ISP, or is it GT?