context: It is certain that Bernhard is a frog. It is almost certain that Brian is yellow. It is probable that Julius is a rhino. Chances are about even that if either Julius is a rhino, or Bernhard is a frog, then Sandra grabbed the milk. It is highly unlikely that if Julius is a rhino, and Brian is yellow, then John moved to the office. It is almost certain that if Julius is a rhino, or Bernhard is a frog, then Greg is a lion.
hypothesis: It is certain that brian is yellow, or Julius is a rhino.
valid_hypothesis: It is certain that brian is yellow, or Julius is a rhino.
invalid_hypothesis: It is improbable that brian is yellow, or Julius is a rhino.
hypothesis_assertion: Brian is yellow, or Julius is a rhino.