context: It is highly unlikely that Gertrude is a sheep. There is a better than even chance that Greg is yellow. It is highly likely that Daniel left the milk. We believe that if Gertrude is a sheep, and Greg is yellow, then Brian is a frog. It is certain that if either Gertrude is a sheep, or Greg is yellow, then Mary got the milk. It is almost certain that if either Daniel left the milk, or Greg is yellow, then Bernhard is a rhino.
hypothesis: It is highly likely that either Daniel left the milk, or Brian is a frog.
valid_hypothesis: It is highly likely that either Daniel left the milk, or Brian is a frog.
invalid_hypothesis: It is impossible that either Daniel left the milk, or Brian is a frog.
hypothesis_assertion: Either Daniel left the milk, or Brian is a frog.