context: It is certain that John took the apple. There is little chance that Greg is a swan. It is probable that Bernhard is a lion. It is highly unlikely that if Bernhard is a lion, or Greg is a swan, then Julius is white. It is impossible that if John took the apple, or Bernhard is a lion, then Brian is gray. Chances are slight that if Greg is a swan, or Bernhard is a lion, then Lily is a frog.
hypothesis: It is likely that lily is a frog, and Brian is gray.
valid_hypothesis: It is impossible that lily is a frog, and Brian is gray.
invalid_hypothesis: It is likely that lily is a frog, and Brian is gray.
hypothesis_assertion: Lily is a frog, and Brian is gray.