context: It is probable that Jessica is a sheep. It is impossible that Greg is a frog. It is almost certain that Lily is a swan. It is probably not the case that if Jessica is a sheep, or Greg is a frog, then Bernhard is yellow. There is little chance that if Jessica is a sheep, or Lily is a swan, then Brian is yellow. Chances are slight that if Greg is a frog, or Jessica is a sheep, then John picked up the apple.
hypothesis: It is highly likely that either Lily is a swan, or Brian is yellow.
valid_hypothesis: It is highly likely that either Lily is a swan, or Brian is yellow.
invalid_hypothesis: There is almost no chance that either Lily is a swan, or Brian is yellow.
hypothesis_assertion: Either Lily is a swan, or Brian is yellow.