I'd drop it, as the Olympic committee/group are famously militant about protecting their TM from domainers and there's no way you could even monetize it without eventual trouble. They would never pay for this name (they'd take it from you) and even if you were to find a non-Olympic buyer, you would hardly get a few dollars for it and certainly it's not worth potential lawsuits just to try get a few $ from the name. It's a hot potato and I'd drop it; Sorry about that