premise: Six men in tuxedos stand next to a black metal fence outside the back doors of a marble building. hypothesis: 2 women are talking.
contradiction: It cannot be six men and two women at the same time.|contradiction: 2 women are not six men.|contradiction: Are there six men or two women? It cannot be both are the genders vary as do the number of people. Then, are they in position to stand next to a fence or talking? It could be both but it does not state so.