context: It is highly likely that Lily is a lion. It is unlikely that Emily is a cat. We believe that Greg is a rhino. It is unlikely that if Greg is a rhino, or Emily is a cat, then Daniel put down the milk. There is a better than even chance that if either Emily is a cat, or Greg is a rhino, then Sandra got the apple. It is impossible that if either Greg is a rhino, or Lily is a lion, then Bernhard is green.
hypothesis: Chances are about even that daniel put down the milk, or Sandra got the apple.
valid_hypothesis: Chances are about even that daniel put down the milk, or Sandra got the apple.
invalid_hypothesis: It is certain that daniel put down the milk, or Sandra got the apple.
hypothesis_assertion: Daniel put down the milk, or Sandra got the apple.