premise: The firefighter has a hose ready to tackle a car fire. hypothesis: A firefighter rescues a cat from a house fire.
contradiction: The firefighter has a hose ready to tackle a car fire which is different from a firefighter rescuing a cat from a house fire.|contradiction: One cannot be in a house fire and car fire at the same time.|contradiction: A car and house and different places. The firefighter cannot rescue a cat if he has a hose in his hands.