premise: Three young boys, a young girl, and a small dog are playing in a fort made of sticks. hypothesis: The group of kids are fighting in a tent.
contradiction: The fort made of sticks is a different sort of enclosure than a tent, which is usually made of some kind of fabric. The activities in the two instances, playing and fighting, are different in how the individuals treat one another, with playing they are getting along while in fighting they are not.