context: There is almost no chance that Julius is a rhino. There is a very good chance that Brian is a lion. We doubt that Greg is a swan.
hypothesis: It is certain that greg is a swan, or Julius is a rhino.
valid_hypothesis: We doubt that greg is a swan, or Julius is a rhino.
invalid_hypothesis: It is certain that greg is a swan, or Julius is a rhino.
hypothesis_assertion: Greg is a swan, or Julius is a rhino.