context: It is probably the case that Greg is a rhino. It is almost certain that Julius is gray. There is a very good chance that Gertrude is a mouse. There is little chance that if Julius is gray, or Greg is a rhino, then Fred went to the kitchen. We believe that if either Gertrude is a mouse, or Greg is a rhino, then Lily is a swan. It is probably not the case that if Gertrude is a mouse, and Greg is a rhino, then Jessica is a cat.
hypothesis: It is almost certain that lily is a swan, and Fred went to the kitchen.
valid_hypothesis: There is almost no chance that lily is a swan, and Fred went to the kitchen.
invalid_hypothesis: It is almost certain that lily is a swan, and Fred went to the kitchen.
hypothesis_assertion: Lily is a swan, and Fred went to the kitchen.