context: It is highly likely that Brian is a swan. There is a very good chance that Greg is a lion. It is impossible that Lily is a rhino. It is highly unlikely that if Lily is a rhino, and Greg is a lion, then John got the milk. It is probable that if Brian is a swan, or Lily is a rhino, then Jessica is a cat. There is almost no chance that if Lily is a rhino, and Brian is a swan, then Mary went to the bedroom.
hypothesis: We doubt that greg is a lion, or John got the milk.
valid_hypothesis: There is a very good chance that greg is a lion, or John got the milk.
invalid_hypothesis: We doubt that greg is a lion, or John got the milk.
hypothesis_assertion: Greg is a lion, or John got the milk.