context: It is unlikely that Bernhard is a swan. It is highly likely that Lily is a frog. It is probable that Sandra took the football.
hypothesis: We believe that either Bernhard is a swan, or Lily is a frog.
valid_hypothesis: We believe that either Bernhard is a swan, or Lily is a frog.
invalid_hypothesis: It is impossible that either Bernhard is a swan, or Lily is a frog.
hypothesis_assertion: Either Bernhard is a swan, or Lily is a frog.