context: It is highly likely that Greg is a rhino. There is almost no chance that Julius is a swan. It is unlikely that Lily is a lion. It is probable that if Lily is a lion, and Greg is a rhino, then Mary moved to the garden. It is likely that if either Julius is a swan, or Lily is a lion, then Sandra got the apple. There is a better than even chance that if Julius is a swan, or Greg is a rhino, then Emily is a wolf.
hypothesis: We believe that either Lily is a lion, or Greg is a rhino.
valid_hypothesis: We believe that either Lily is a lion, or Greg is a rhino.
invalid_hypothesis: It is impossible that either Lily is a lion, or Greg is a rhino.
hypothesis_assertion: Either Lily is a lion, or Greg is a rhino.