context: It is probable that Bernhard is a lion. There is a very good chance that Daniel dropped the milk. Chances are about even that Greg is a frog. There is a very good chance that if Bernhard is a lion, or Greg is a frog, then Brian is green. It is unlikely that if either Greg is a frog, or Daniel dropped the milk, then John went to the bedroom. It is improbable that if Daniel dropped the milk, or Bernhard is a lion, then Fred is in the park.
hypothesis: There is almost no chance that brian is green, or Greg is a frog.
valid_hypothesis: There is a very good chance that brian is green, or Greg is a frog.
invalid_hypothesis: There is almost no chance that brian is green, or Greg is a frog.
hypothesis_assertion: Brian is green, or Greg is a frog.