context: It is highly likely that Bernhard is a swan. It is probably not the case that Sandra is in the garden. We doubt that Bill went to the kitchen.
hypothesis: We believe that either Bill went to the kitchen, or Bernhard is a swan.
valid_hypothesis: We believe that either Bill went to the kitchen, or Bernhard is a swan.
invalid_hypothesis: It is probably not the case that either Bill went to the kitchen, or Bernhard is a swan.
hypothesis_assertion: Either Bill went to the kitchen, or Bernhard is a swan.