context: We doubt that Brian is gray. There is almost no chance that Jessica is a mouse. We believe that Bernhard is a lion. It is almost certain that if Bernhard is a lion, and Jessica is a mouse, then John discarded the milk. It is probably the case that if Jessica is a mouse, and Brian is gray, then Greg is a rhino. There is a better than even chance that if Bernhard is a lion, or Jessica is a mouse, then Fred went to the kitchen.
hypothesis: Chances are about even that bernhard is a lion, and Fred went to the kitchen.
valid_hypothesis: Chances are about even that bernhard is a lion, and Fred went to the kitchen.
invalid_hypothesis: It is almost certain that bernhard is a lion, and Fred went to the kitchen.
hypothesis_assertion: Bernhard is a lion, and Fred went to the kitchen.