context: It is improbable that Fred is in the kitchen. It is improbable that Bernhard is a lion. There is little chance that Lily is a rhino. It is highly unlikely that if either Lily is a rhino, or Fred is in the kitchen, then Julius is gray. It is impossible that if Bernhard is a lion, and Fred is in the kitchen, then Brian is gray. It is highly unlikely that if Lily is a rhino, and Fred is in the kitchen, then John moved to the office.
hypothesis: There is a better than even chance that either Brian is gray, or Julius is gray.
valid_hypothesis: It is impossible that either Brian is gray, or Julius is gray.
invalid_hypothesis: There is a better than even chance that either Brian is gray, or Julius is gray.
hypothesis_assertion: Either Brian is gray, or Julius is gray.