context: We believe that Bernhard is a swan. It is improbable that Mary moved to the garden. We believe that John went to the kitchen.
hypothesis: There is a very good chance that mary moved to the garden, and John went to the kitchen.
valid_hypothesis: Chances are slight that mary moved to the garden, and John went to the kitchen.
invalid_hypothesis: There is a very good chance that mary moved to the garden, and John went to the kitchen.
hypothesis_assertion: Mary moved to the garden, and John went to the kitchen.