context: It is likely that Julius is a rhino. It is probably not the case that Mary moved to the office. There is little chance that Bernhard is a swan. There is a better than even chance that if Bernhard is a swan, and Mary moved to the office, then Gertrude is a mouse. It is highly likely that if Bernhard is a swan, or Mary moved to the office, then John went to the garden. It is unlikely that if either Julius is a rhino, or Bernhard is a swan, then Brian is white.
hypothesis: There is almost no chance that either Julius is a rhino, or John went to the garden.
valid_hypothesis: There is a better than even chance that either Julius is a rhino, or John went to the garden.
invalid_hypothesis: There is almost no chance that either Julius is a rhino, or John went to the garden.
hypothesis_assertion: Either Julius is a rhino, or John went to the garden.