context: Chances are slight that John discarded the milk. It is likely that Lily is white. It is certain that Jessica is a mouse. It is highly likely that if either John discarded the milk, or Lily is white, then Bernhard is a frog. Chances are slight that if either John discarded the milk, or Lily is white, then Brian is green. There is little chance that if Lily is white, or John discarded the milk, then Mary went to the garden.
hypothesis: Chances are about even that either Bernhard is a frog, or Mary went to the garden.
valid_hypothesis: Chances are about even that either Bernhard is a frog, or Mary went to the garden.
invalid_hypothesis: There is almost no chance that either Bernhard is a frog, or Mary went to the garden.
hypothesis_assertion: Either Bernhard is a frog, or Mary went to the garden.