context: Chances are slight that Daniel left the milk. There is a very good chance that John went to the kitchen. It is highly unlikely that Julius is a rhino. Chances are about even that if Daniel left the milk, or Julius is a rhino, then Bill is in the kitchen. It is unlikely that if Daniel left the milk, and Julius is a rhino, then Lily is gray. It is certain that if John went to the kitchen, or Daniel left the milk, then Bernhard is a swan.
hypothesis: It is highly unlikely that bill is in the kitchen, and John went to the kitchen.
valid_hypothesis: It is highly unlikely that bill is in the kitchen, and John went to the kitchen.
invalid_hypothesis: There is a better than even chance that bill is in the kitchen, and John went to the kitchen.
hypothesis_assertion: Bill is in the kitchen, and John went to the kitchen.