context: It is probable that Winona is a mouse. There is a very good chance that John dropped the apple. It is probably the case that Bernhard is gray. It is certain that if either Winona is a mouse, or John dropped the apple, then Lily is a frog. It is highly likely that if John dropped the apple, and Bernhard is gray, then Mary went to the kitchen. Chances are slight that if Winona is a mouse, or Bernhard is gray, then Greg is green.
hypothesis: It is certain that either Winona is a mouse, or Mary went to the kitchen.
valid_hypothesis: Chances are about even that either Winona is a mouse, or Mary went to the kitchen.
invalid_hypothesis: It is certain that either Winona is a mouse, or Mary went to the kitchen.
hypothesis_assertion: Either Winona is a mouse, or Mary went to the kitchen.