Question:  Nile Gardiner is director of the Margaret Thatcher Center for Freedom at The Heritage Foundation, an American conservative think tank based where?
Sentence (from "Wang Huiyao"): According to the "2016 Global Go To Think Tank Index" by the University of Pennsylvania Think Tank and Civil Society Program (TTCSP), the most prestigious think tank ranking in the world, CCG ranked 111th of the top world think tanks and was one of the world's top 40 independent think tanks.
Relevant evidence: No