context: We believe that John went to the hallway. It is probably not the case that Greg is a rhino. It is unlikely that Bernhard is a lion. It is likely that if John went to the hallway, or Bernhard is a lion, then Lily is a frog. It is unlikely that if John went to the hallway, and Bernhard is a lion, then Julius is a swan. It is probably not the case that if either John went to the hallway, or Bernhard is a lion, then Sandra left the milk.
hypothesis: It is probably not the case that sandra left the milk, or Greg is a rhino.
valid_hypothesis: It is probably not the case that sandra left the milk, or Greg is a rhino.
invalid_hypothesis: It is probable that sandra left the milk, or Greg is a rhino.
hypothesis_assertion: Sandra left the milk, or Greg is a rhino.