context: Chances are about even that Bernhard is yellow. It is certain that Greg is green. We doubt that Brian is a lion. It is impossible that if either Bernhard is yellow, or Brian is a lion, then Daniel dropped the apple. It is likely that if Bernhard is yellow, or Brian is a lion, then Mary went to the office. It is probable that if either Greg is green, or Brian is a lion, then John left the football.
hypothesis: It is almost certain that either Brian is a lion, or Bernhard is yellow.
valid_hypothesis: Chances are about even that either Brian is a lion, or Bernhard is yellow.
invalid_hypothesis: It is almost certain that either Brian is a lion, or Bernhard is yellow.
hypothesis_assertion: Either Brian is a lion, or Bernhard is yellow.