context: We believe that Bernhard is a frog. It is probably not the case that John went to the kitchen. It is probably not the case that Julius is a lion. Chances are about even that if Julius is a lion, or Bernhard is a frog, then Brian is a frog. There is almost no chance that if John went to the kitchen, or Julius is a lion, then Mary put down the milk. It is probable that if either Bernhard is a frog, or John went to the kitchen, then Greg is green.
hypothesis: There is a very good chance that bernhard is a frog, or Julius is a lion.
valid_hypothesis: There is a very good chance that bernhard is a frog, or Julius is a lion.
invalid_hypothesis: There is almost no chance that bernhard is a frog, or Julius is a lion.
hypothesis_assertion: Bernhard is a frog, or Julius is a lion.