context: It is almost certain that John went to the kitchen. It is impossible that Bernhard is yellow. There is little chance that Brian is a frog. There is a very good chance that if Bernhard is yellow, and Brian is a frog, then Daniel is in the garden. We doubt that if John went to the kitchen, and Brian is a frog, then Lily is gray. There is little chance that if Brian is a frog, or John went to the kitchen, then Julius is a rhino.
hypothesis: There is a better than even chance that brian is a frog, and John went to the kitchen.
valid_hypothesis: Chances are slight that brian is a frog, and John went to the kitchen.
invalid_hypothesis: There is a better than even chance that brian is a frog, and John went to the kitchen.
hypothesis_assertion: Brian is a frog, and John went to the kitchen.