context: It is highly unlikely that Sandra left the apple. It is probable that Lily is green. It is probably the case that John went to the kitchen. We doubt that if Lily is green, or John went to the kitchen, then Bernhard is a lion. It is highly likely that if John went to the kitchen, or Sandra left the apple, then Mary grabbed the milk. It is highly unlikely that if either Lily is green, or Sandra left the apple, then Brian is gray.
hypothesis: There is almost no chance that brian is gray, and John went to the kitchen.
valid_hypothesis: There is almost no chance that brian is gray, and John went to the kitchen.
invalid_hypothesis: There is a better than even chance that brian is gray, and John went to the kitchen.
hypothesis_assertion: Brian is gray, and John went to the kitchen.