context: It is highly unlikely that Bernhard is a swan. It is probably the case that Bill went to the kitchen. It is improbable that John left the milk.
hypothesis: It is likely that either Bill went to the kitchen, or Bernhard is a swan.
valid_hypothesis: It is likely that either Bill went to the kitchen, or Bernhard is a swan.
invalid_hypothesis: Chances are slight 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.