context: It is improbable that Brian is a swan. It is impossible that Bernhard is a frog. There is little chance that Lily is a rhino.
hypothesis: It is certain that either Lily is a rhino, or Bernhard is a frog.
valid_hypothesis: There is little chance that either Lily is a rhino, or Bernhard is a frog.
invalid_hypothesis: It is certain that either Lily is a rhino, or Bernhard is a frog.
hypothesis_assertion: Either Lily is a rhino, or Bernhard is a frog.