context: It is certain that Winona is a wolf. It is improbable that Brian is green. It is probably not the case that Greg is a rhino. Chances are about even that if either Winona is a wolf, or Brian is green, then Sandra got the apple. It is probably the case that if Brian is green, and Greg is a rhino, then Julius is yellow. There is a better than even chance that if either Greg is a rhino, or Brian is green, then Mary moved to the garden.
hypothesis: It is likely that brian is green, or Greg is a rhino.
valid_hypothesis: It is probably not the case that brian is green, or Greg is a rhino.
invalid_hypothesis: It is likely that brian is green, or Greg is a rhino.
hypothesis_assertion: Brian is green, or Greg is a rhino.