context: It is highly unlikely that Julius is a frog. We believe that John went to the office. It is likely that Winona is a wolf. It is impossible that if Julius is a frog, and John went to the office, then Bernhard is a swan. It is probably the case that if either Winona is a wolf, or Julius is a frog, then Lily is a rhino. It is probably the case that if John went to the office, or Winona is a wolf, then Yann got the milk there.
hypothesis: It is highly unlikely that either Yann got the milk there, or Lily is a rhino.
valid_hypothesis: Chances are about even that either Yann got the milk there, or Lily is a rhino.
invalid_hypothesis: It is highly unlikely that either Yann got the milk there, or Lily is a rhino.
hypothesis_assertion: Either Yann got the milk there, or Lily is a rhino.