context: It is impossible that Brian is gray. It is almost certain that Bernhard is a frog. It is highly likely that Mary went to the office. It is certain that if Bernhard is a frog, or Brian is gray, then Lily is a rhino. There is a better than even chance that if Mary went to the office, and Bernhard is a frog, then Daniel grabbed the milk. It is probably not the case that if either Bernhard is a frog, or Mary went to the office, then Greg is gray.
hypothesis: It is almost certain that brian is gray, or Bernhard is a frog.
valid_hypothesis: It is almost certain that brian is gray, or Bernhard is a frog.
invalid_hypothesis: Chances are slight that brian is gray, or Bernhard is a frog.
hypothesis_assertion: Brian is gray, or Bernhard is a frog.