context: It is probable that Bernhard is a frog. We believe that Brian is a frog. It is impossible that Greg is a swan. It is highly unlikely that if Brian is a frog, and Greg is a swan, then Lily is a lion. It is certain that if Brian is a frog, or Greg is a swan, then Mary went to the kitchen. It is certain that if either Brian is a frog, or Bernhard is a frog, then Daniel got the milk.
hypothesis: Chances are about even that either Daniel got the milk, or Lily is a lion.
valid_hypothesis: Chances are about even that either Daniel got the milk, or Lily is a lion.
invalid_hypothesis: It is almost certain that either Daniel got the milk, or Lily is a lion.
hypothesis_assertion: Either Daniel got the milk, or Lily is a lion.