context: There is almost no chance that Brian is a swan. There is little chance that Winona is a sheep. It is impossible that Julius is yellow.
hypothesis: Chances are slight that brian is a swan, or Winona is a sheep.
valid_hypothesis: Chances are slight that brian is a swan, or Winona is a sheep.
invalid_hypothesis: It is likely that brian is a swan, or Winona is a sheep.
hypothesis_assertion: Brian is a swan, or Winona is a sheep.