context: Chances are slight that Winona is a cat. Chances are about even that Bernhard is yellow. It is improbable that Julius is a rhino.
hypothesis: It is impossible that winona is a cat, or Bernhard is yellow.
valid_hypothesis: There is a better than even chance that winona is a cat, or Bernhard is yellow.
invalid_hypothesis: It is impossible that winona is a cat, or Bernhard is yellow.
hypothesis_assertion: Winona is a cat, or Bernhard is yellow.