context: It is probably not the case that Brian is a rhino. It is certain that Julius is white. There is almost no chance that Lily is green. We doubt that if either Julius is white, or Lily is green, then Greg is a swan. There is a better than even chance that if Brian is a rhino, or Julius is white, then Bernhard is a frog. It is probably not the case that if Brian is a rhino, or Lily is green, then Sandra left the milk.
hypothesis: It is probably the case that either Sandra left the milk, or Greg is a swan.
valid_hypothesis: It is probably not the case that either Sandra left the milk, or Greg is a swan.
invalid_hypothesis: It is probably the case that either Sandra left the milk, or Greg is a swan.
hypothesis_assertion: Either Sandra left the milk, or Greg is a swan.