Question: What stake was held on June 6, 2015 that the American Thoroughbred racehorse Frosted attended?
Sentence (from "The Tin Man (horse)"): The gelding was sired by Affirmed, the Triple Crown of Thoroughbred Racing winner, out of the unplaced Lizzie Rolfe by Tom Rolfe, who was an exceptional racehorse but a better broodmare sire.
Relevant evidence: No