premise: A group of people at a 4th of july celebration, with one man standing on a stage with american flag colored decorations around him. hypothesis: The group are celebrating Christmas.
contradiction: The group cannot be celebrating the 4th of July and Christmas at the same time.|contradiction: If people are at a 4th of july celebration they are not celebrating Christmas.|contradiction: People can't be celebrating Christmas on 4th of July with american flag colored decorations.