context: It is almost certain that Lily is a lion. It is probably the case that Brian is green. It is highly likely that Jeff dropped the apple. Chances are about even that if either Jeff dropped the apple, or Lily is a lion, then Mary went to the kitchen. It is certain that if Brian is green, and Lily is a lion, then Daniel got the milk. There is little chance that if Brian is green, or Jeff dropped the apple, then John put down the apple.
hypothesis: It is highly unlikely that either Mary went to the kitchen, or Jeff dropped the apple.
valid_hypothesis: It is highly likely that either Mary went to the kitchen, or Jeff dropped the apple.
invalid_hypothesis: It is highly unlikely that either Mary went to the kitchen, or Jeff dropped the apple.
hypothesis_assertion: Either Mary went to the kitchen, or Jeff dropped the apple.