context: Chances are about even that Brian is green. There is little chance that Lily is a rhino. There is a very good chance that Julius is white. It is certain that if Brian is green, and Lily is a rhino, then Bernhard is a frog. Chances are about even that if Julius is white, and Lily is a rhino, then Mary went to the garden. There is a better than even chance that if Brian is green, or Julius is white, then Sandra put down the milk.
hypothesis: Chances are slight that mary went to the garden, or Lily is a rhino.
valid_hypothesis: Chances are slight that mary went to the garden, or Lily is a rhino.
invalid_hypothesis: It is probably the case that mary went to the garden, or Lily is a rhino.
hypothesis_assertion: Mary went to the garden, or Lily is a rhino.