context: It is likely that Brian is a swan. There is a very good chance that Bernhard is gray. There is a better than even chance that Lily is white. We believe that if either Brian is a swan, or Lily is white, then John took the apple. It is highly likely that if Brian is a swan, and Bernhard is gray, then Mary went to the office. It is highly unlikely that if either Bernhard is gray, or Lily is white, then Greg is a rhino.
hypothesis: It is highly unlikely that greg is a rhino, or Brian is a swan.
valid_hypothesis: It is probable that greg is a rhino, or Brian is a swan.
invalid_hypothesis: It is highly unlikely that greg is a rhino, or Brian is a swan.
hypothesis_assertion: Greg is a rhino, or Brian is a swan.