context: It is highly unlikely that Bernhard is a frog. There is almost no chance that Bill went to the office. It is highly unlikely that Lily is a swan. It is highly likely that if Lily is a swan, or Bernhard is a frog, then Julius is gray. It is probable that if Bernhard is a frog, and Bill went to the office, then Greg is a rhino. We believe that if Bernhard is a frog, and Bill went to the office, then Mary got the milk.
hypothesis: It is certain that julius is gray, and Greg is a rhino.
valid_hypothesis: It is impossible that julius is gray, and Greg is a rhino.
invalid_hypothesis: It is certain that julius is gray, and Greg is a rhino.
hypothesis_assertion: Julius is gray, and Greg is a rhino.