context: It is probably the case that Winona is a cat. It is impossible that Lily is gray. There is a better than even chance that Mary went to the office. It is certain that if Winona is a cat, or Mary went to the office, then Julius is a lion. It is probably not the case that if either Winona is a cat, or Lily is gray, then Jeff dropped the apple. It is probably not the case that if either Winona is a cat, or Mary went to the office, then Bernhard is yellow.
hypothesis: It is certain that either Jeff dropped the apple, or Winona is a cat.
valid_hypothesis: Chances are about even that either Jeff dropped the apple, or Winona is a cat.
invalid_hypothesis: It is certain that either Jeff dropped the apple, or Winona is a cat.
hypothesis_assertion: Either Jeff dropped the apple, or Winona is a cat.