context: It is certain that Greg is gray. It is highly likely that Bernhard is green. There is almost no chance that Jessica is a cat. We doubt that if either Greg is gray, or Bernhard is green, then Julius is yellow. There is little chance that if Bernhard is green, or Jessica is a cat, then Brian is a swan. It is highly unlikely that if Greg is gray, and Jessica is a cat, then Mary went to the office.
hypothesis: It is impossible that julius is yellow, and Brian is a swan.
valid_hypothesis: It is impossible that julius is yellow, and Brian is a swan.
invalid_hypothesis: It is almost certain that julius is yellow, and Brian is a swan.
hypothesis_assertion: Julius is yellow, and Brian is a swan.