Question: When was the 8th season of the show premiered in which Samantha Jo "Mandy" Moore have appeared and  which is an American television reality program and dance competition airing on the Fox network?
Sentence (from "Mandy Moore (choreographer)"): She has also choreographed duet and group numbers for "So You Think You Can Dance United Kingdom", "Canada", "Ukraine", and "the Netherlands".
Relevant evidence: No