Question: The Professional Basketball Club LLC is an investment group headed by who, which American businessman and chairman of the Professional Basketball Club LLC, the ownership group of the Oklahoma City Thunder, an NBA franchise formerly known as the Seattle SuperSonics?
Sentence (from "Professional Basketball Club"): The Professional Basketball Club LLC is an investment group headed by Clay Bennett that owns the National Basketball Association (NBA)'s Oklahoma City Thunder franchise (formerly the Seattle SuperSonics) and the Thunder's NBA Development League affiliate Oklahoma City Blue.
Relevant evidence: Yes