context: It is almost certain that Jessica is a sheep. It is impossible that Bernhard is green. We believe that Brian is a frog. There is almost no chance that if Bernhard is green, or Jessica is a sheep, then Lily is white. Chances are about even that if either Bernhard is green, or Jessica is a sheep, then Mary is in the school. There is a very good chance that if either Jessica is a sheep, or Brian is a frog, then Winona is a cat.
hypothesis: There is almost no chance that winona is a cat, and Brian is a frog.
valid_hypothesis: There is almost no chance that winona is a cat, and Brian is a frog.
invalid_hypothesis: It is probably the case that winona is a cat, and Brian is a frog.
hypothesis_assertion: Winona is a cat, and Brian is a frog.