context: It is certain that John got the milk. It is impossible that Mary moved to the garden. It is almost certain that Lily is gray. It is highly unlikely that if John got the milk, and Mary moved to the garden, then Jeff went to the kitchen. It is highly likely that if Mary moved to the garden, or Lily is gray, then Greg is white. There is a better than even chance that if Mary moved to the garden, or John got the milk, then Brian is a rhino.
hypothesis: Chances are about even that either John got the milk, or Lily is gray.
valid_hypothesis: It is highly unlikely that either John got the milk, or Lily is gray.
invalid_hypothesis: Chances are about even that either John got the milk, or Lily is gray.
hypothesis_assertion: Either John got the milk, or Lily is gray.