premise: A Caucasian woman stands with her back to the camera while completing a transaction at an ATM machine. hypothesis: The woman is sitting on the back porch.
contradiction: Either the woman is standing while completing a transaction at an ATM machine, or she is sitting on the back porch.|contradiction: A woman cannot be on her back porch and at an ATM machine at the same time.|contradiction: The woman is either standing or sitting. Usually there would not be an ATM machine on a back porch.