context: It is certain that Brian is a frog. Chances are slight that John went to the kitchen. It is improbable that Bernhard is yellow.
hypothesis: We believe that john went to the kitchen, and Bernhard is yellow.
valid_hypothesis: There is almost no chance that john went to the kitchen, and Bernhard is yellow.
invalid_hypothesis: We believe that john went to the kitchen, and Bernhard is yellow.
hypothesis_assertion: John went to the kitchen, and Bernhard is yellow.