context: It is probable that Greg is a lion. It is probable that Bernhard is a frog. There is almost no chance that Julius is a rhino. It is probably the case that if either Bernhard is a frog, or Julius is a rhino, then Jason is bored. There is a better than even chance that if Bernhard is a frog, or Greg is a lion, then Mary grabbed the milk. Chances are slight that if Greg is a lion, and Bernhard is a frog, then Gertrude is a mouse.
hypothesis: Chances are about even that either Mary grabbed the milk, or Greg is a lion.
valid_hypothesis: Chances are about even that either Mary grabbed the milk, or Greg is a lion.
invalid_hypothesis: It is almost certain that either Mary grabbed the milk, or Greg is a lion.
hypothesis_assertion: Either Mary grabbed the milk, or Greg is a lion.