context: Chances are about even that John moved to the office. There is little chance that Gertrude is a wolf. It is certain that Jeff went to the kitchen. It is unlikely that if Jeff went to the kitchen, and John moved to the office, then Fred left the milk. It is improbable that if John moved to the office, and Jeff went to the kitchen, then Sandra took the football. It is almost certain that if Gertrude is a wolf, or Jeff went to the kitchen, then Lily is white.
hypothesis: There is little chance that either Fred left the milk, or Lily is white.
valid_hypothesis: It is highly likely that either Fred left the milk, or Lily is white.
invalid_hypothesis: There is little chance that either Fred left the milk, or Lily is white.
hypothesis_assertion: Either Fred left the milk, or Lily is white.