context: There is almost no chance that Brian is yellow. It is highly unlikely that Greg is a rhino. It is highly likely that Bernhard is a frog. It is highly likely that if either Brian is yellow, or Greg is a rhino, then Mary grabbed the milk. It is unlikely that if either Bernhard is a frog, or Greg is a rhino, then Julius is a lion. It is highly unlikely that if Greg is a rhino, or Brian is yellow, then John left the apple.
hypothesis: Chances are about even that greg is a rhino, and Mary grabbed the milk.
valid_hypothesis: It is highly unlikely that greg is a rhino, and Mary grabbed the milk.
invalid_hypothesis: Chances are about even that greg is a rhino, and Mary grabbed the milk.
hypothesis_assertion: Greg is a rhino, and Mary grabbed the milk.