context: It is highly unlikely that Lily is a lion. Chances are slight that Mary went to the garden. There is little chance that Brian is a rhino.
hypothesis: There is a better than even chance that either Brian is a rhino, or Lily is a lion.
valid_hypothesis: Chances are slight that either Brian is a rhino, or Lily is a lion.
invalid_hypothesis: There is a better than even chance that either Brian is a rhino, or Lily is a lion.
hypothesis_assertion: Either Brian is a rhino, or Lily is a lion.