context: It is impossible that Julius is a lion. We believe that Greg is a swan. It is certain that Lily is a swan.
hypothesis: It is highly unlikely that julius is a lion, or Lily is a swan.
valid_hypothesis: It is certain that julius is a lion, or Lily is a swan.
invalid_hypothesis: It is highly unlikely that julius is a lion, or Lily is a swan.
hypothesis_assertion: Julius is a lion, or Lily is a swan.