premise: Binge<br>Ron hadn't lived near a big store for a long time. The first thing he did was buy a lot of ice cream. He binged out and ate it all in one sitting. Ron felt very sick for days after that. He swore to have more self-discipline no matter how close a store was.
hypothesis: The ice cream made Ron sick to his stomach.
reason: The text says that the ice cream made Ron sick, not particularly to his stomach. The system probably made the most natural assumption about his illness.