context: There is a very good chance that Brian is a swan. It is probably the case that Mary took the apple. There is a better than even chance that Julie is in the kitchen. Chances are about even that if either Brian is a swan, or Mary took the apple, then John left the football. It is unlikely that if either Mary took the apple, or Julie is in the kitchen, then Lily is a rhino. It is certain that if Brian is a swan, and Julie is in the kitchen, then Jessica is a cat.
hypothesis: There is almost no chance that lily is a rhino, and John left the football.
valid_hypothesis: There is almost no chance that lily is a rhino, and John left the football.
invalid_hypothesis: It is almost certain that lily is a rhino, and John left the football.
hypothesis_assertion: Lily is a rhino, and John left the football.