context: There is almost no chance that Winona is a mouse. It is unlikely that Daniel grabbed the milk. We doubt that Mary went to the kitchen. It is probable that if Mary went to the kitchen, and Daniel grabbed the milk, then Greg is a lion. Chances are slight that if Daniel grabbed the milk, and Mary went to the kitchen, then John discarded the apple. Chances are slight that if either Mary went to the kitchen, or Daniel grabbed the milk, then Julius is gray.
hypothesis: It is probably the case that either Julius is gray, or Greg is a lion.
valid_hypothesis: It is highly unlikely that either Julius is gray, or Greg is a lion.
invalid_hypothesis: It is probably the case that either Julius is gray, or Greg is a lion.
hypothesis_assertion: Either Julius is gray, or Greg is a lion.