context: It is highly unlikely that Julius is a frog. We believe that Lily is a lion. It is probably the case that Brian is a rhino.
hypothesis: Chances are about even that brian is a rhino, or Lily is a lion.
valid_hypothesis: It is almost certain that brian is a rhino, or Lily is a lion.
invalid_hypothesis: Chances are about even that brian is a rhino, or Lily is a lion.
hypothesis_assertion: Brian is a rhino, or Lily is a lion.