context: It is highly likely that Greg is a rhino. It is highly unlikely that Julius is yellow. It is probable that Brian is a lion. Chances are about even that if Greg is a rhino, and Brian is a lion, then Winona is a mouse. There is almost no chance that if either Julius is yellow, or Brian is a lion, then Daniel took the football. There is little chance that if Greg is a rhino, or Julius is yellow, then Bernhard is green.
hypothesis: It is probably not the case that winona is a mouse, or Julius is yellow.
valid_hypothesis: It is probably not the case that winona is a mouse, or Julius is yellow.
invalid_hypothesis: It is certain that winona is a mouse, or Julius is yellow.
hypothesis_assertion: Winona is a mouse, or Julius is yellow.