context: It is unlikely that Jessica is a cat. It is probably not the case that Lily is a rhino. There is little chance that Sandra left the milk. There is a very good chance that if either Sandra left the milk, or Lily is a rhino, then Greg is a swan. It is highly unlikely that if Lily is a rhino, or Sandra left the milk, then Julius is a frog. It is impossible that if Lily is a rhino, and Sandra left the milk, then Winona is a wolf.
hypothesis: It is probable that sandra left the milk, or Lily is a rhino.
valid_hypothesis: It is probably not the case that sandra left the milk, or Lily is a rhino.
invalid_hypothesis: It is probable that sandra left the milk, or Lily is a rhino.
hypothesis_assertion: Sandra left the milk, or Lily is a rhino.