context: It is probably the case that Antoine is thirsty. It is almost certain that Brian is a lion. Chances are slight that John moved to the garden. There is a better than even chance that if John moved to the garden, or Antoine is thirsty, then Mary got the football. It is highly unlikely that if either Brian is a lion, or Antoine is thirsty, then Bernhard is gray. There is a better than even chance that if Brian is a lion, or Antoine is thirsty, then Jeff dropped the apple.
hypothesis: There is almost no chance that either Mary got the football, or Bernhard is gray.
valid_hypothesis: Chances are about even that either Mary got the football, or Bernhard is gray.
invalid_hypothesis: There is almost no chance that either Mary got the football, or Bernhard is gray.
hypothesis_assertion: Either Mary got the football, or Bernhard is gray.