context: It is unlikely that Lily is a frog. Chances are about even that Brian is a swan. There is almost no chance that Mary is in the kitchen.
hypothesis: It is impossible that mary is in the kitchen, and Lily is a frog.
valid_hypothesis: It is impossible that mary is in the kitchen, and Lily is a frog.
invalid_hypothesis: There is a better than even chance that mary is in the kitchen, and Lily is a frog.
hypothesis_assertion: Mary is in the kitchen, and Lily is a frog.