context: Chances are about even that Greg is yellow. Chances are about even that John went to the garden. It is highly likely that Bernhard is yellow. It is probable that if either John went to the garden, or Greg is yellow, then Julius is a swan. There is a very good chance that if Bernhard is yellow, and John went to the garden, then Sandra left the apple. We believe that if John went to the garden, and Greg is yellow, then Brian is a frog.
hypothesis: It is likely that either Sandra left the apple, or Brian is a frog.
valid_hypothesis: It is probably not the case that either Sandra left the apple, or Brian is a frog.
invalid_hypothesis: It is likely that either Sandra left the apple, or Brian is a frog.
hypothesis_assertion: Either Sandra left the apple, or Brian is a frog.