premise: A child is sitting on the grass by a concrete storm drain. hypothesis: A child is sitting next to a computer desk.
contradiction: Either the child is sitting on the grass by a concrete storm drain which infers that they are outside, or the child is sitting next to a computer desk.|contradiction: A child sitting by a concrete drain is not sitting next to a computer desk.|contradiction: " On the grass " implies outside while " next to a computer desk " implies inside.