context: It is probable that Bernhard is a frog. There is little chance that Lily is a rhino. We doubt that Julius is gray. Chances are about even that if either Lily is a rhino, or Bernhard is a frog, then Gertrude is a mouse. It is highly likely that if Lily is a rhino, and Julius is gray, then John moved to the office. It is impossible that if Lily is a rhino, or Julius is gray, then Greg is a swan.
hypothesis: It is almost certain that either Greg is a swan, or Gertrude is a mouse.
valid_hypothesis: It is probably not the case that either Greg is a swan, or Gertrude is a mouse.
invalid_hypothesis: It is almost certain that either Greg is a swan, or Gertrude is a mouse.
hypothesis_assertion: Either Greg is a swan, or Gertrude is a mouse.