context: It is probably not the case that Mary picked up the milk. Chances are about even that Lily is a rhino. There is a better than even chance that Daniel left the milk.
hypothesis: We doubt that daniel left the milk, or Lily is a rhino.
valid_hypothesis: There is a very good chance that daniel left the milk, or Lily is a rhino.
invalid_hypothesis: We doubt that daniel left the milk, or Lily is a rhino.
hypothesis_assertion: Daniel left the milk, or Lily is a rhino.