context: It is probably not the case that Daniel is in the garden. It is impossible that Greg is yellow. Chances are about even that Bernhard is gray. It is probably not the case that if Daniel is in the garden, or Greg is yellow, then Brian is a lion. It is highly unlikely that if either Greg is yellow, or Daniel is in the garden, then John took the apple. There is a better than even chance that if Daniel is in the garden, or Greg is yellow, then Julius is a rhino.
hypothesis: Chances are slight that either Greg is yellow, or Julius is a rhino.
valid_hypothesis: Chances are slight that either Greg is yellow, or Julius is a rhino.
invalid_hypothesis: It is probable that either Greg is yellow, or Julius is a rhino.
hypothesis_assertion: Either Greg is yellow, or Julius is a rhino.