context: It is likely that Lily is white. Chances are slight that Bernhard is a swan. There is a very good chance that Fred went to the garden.
hypothesis: It is impossible that either Lily is white, or Bernhard is a swan.
valid_hypothesis: It is probable that either Lily is white, or Bernhard is a swan.
invalid_hypothesis: It is impossible that either Lily is white, or Bernhard is a swan.
hypothesis_assertion: Either Lily is white, or Bernhard is a swan.