context: It is highly likely that John left the milk. It is probable that Bernhard is a swan. It is impossible that Lily is yellow.
hypothesis: It is probable that either Bernhard is a swan, or Lily is yellow.
valid_hypothesis: It is probable that either Bernhard is a swan, or Lily is yellow.
invalid_hypothesis: There is almost no chance that either Bernhard is a swan, or Lily is yellow.
hypothesis_assertion: Either Bernhard is a swan, or Lily is yellow.