context: There is a better than even chance that Lily is white. There is little chance that Greg is a frog. It is highly unlikely that Gertrude is a mouse. There is almost no chance that if Lily is white, and Greg is a frog, then Winona is a cat. It is probable that if either Lily is white, or Gertrude is a mouse, then Mary took the apple. There is a better than even chance that if either Gertrude is a mouse, or Lily is white, then Brian is a lion.
hypothesis: Chances are about even that mary took the apple, or Greg is a frog.
valid_hypothesis: Chances are about even that mary took the apple, or Greg is a frog.
invalid_hypothesis: It is almost certain that mary took the apple, or Greg is a frog.
hypothesis_assertion: Mary took the apple, or Greg is a frog.