context: It is highly likely that Lily is a lion. It is highly unlikely that Julius is a swan. It is unlikely that Winona is a cat. We doubt that if Lily is a lion, and Winona is a cat, then Sandra grabbed the milk. Chances are slight that if either Winona is a cat, or Lily is a lion, then Daniel got the apple. It is impossible that if Lily is a lion, and Winona is a cat, then Bernhard is gray.
hypothesis: It is highly likely that either Julius is a swan, or Lily is a lion.
valid_hypothesis: It is highly likely that either Julius is a swan, or Lily is a lion.
invalid_hypothesis: Chances are slight that either Julius is a swan, or Lily is a lion.
hypothesis_assertion: Either Julius is a swan, or Lily is a lion.