context: Chances are slight that Lily is a frog. There is a very good chance that Fred went to the kitchen. It is probable that Brian is green. We doubt that if either Lily is a frog, or Fred went to the kitchen, then Bernhard is a lion. It is highly unlikely that if Fred went to the kitchen, and Brian is green, then Greg is a rhino. There is a very good chance that if either Fred went to the kitchen, or Brian is green, then Gertrude is a wolf.
hypothesis: It is almost certain that brian is green, or Fred went to the kitchen.
valid_hypothesis: It is almost certain that brian is green, or Fred went to the kitchen.
invalid_hypothesis: We doubt that brian is green, or Fred went to the kitchen.
hypothesis_assertion: Brian is green, or Fred went to the kitchen.