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 "Portland Trail Blazers all-time roster"): The Trail Blazers are also currently the only NBA team based in the binational Pacific Northwest, after the Vancouver Grizzlies relocated to Memphis and became the Memphis Grizzlies in 2001, and the Seattle SuperSonics relocated to Oklahoma City and became the Oklahoma City Thunder in 2008.
Relevant evidence: No