context: It is highly likely that Greg is a lion. There is almost no chance that Bernhard is a frog. It is almost certain that John dropped the apple. Chances are about even that if John dropped the apple, and Greg is a lion, then Julius is a swan. We doubt that if Bernhard is a frog, and Greg is a lion, then Daniel left the football. It is certain that if either John dropped the apple, or Bernhard is a frog, then Brian is a rhino.
hypothesis: There is almost no chance that bernhard is a frog, or Daniel left the football.
valid_hypothesis: There is almost no chance that bernhard is a frog, or Daniel left the football.
invalid_hypothesis: It is certain that bernhard is a frog, or Daniel left the football.
hypothesis_assertion: Bernhard is a frog, or Daniel left the football.