context: It is probable that Mary went to the office. There is a better than even chance that Julius is white. It is highly likely that Brian is a frog. It is certain that if either Julius is white, or Brian is a frog, then Jeff discarded the apple. It is probably not the case that if Julius is white, or Brian is a frog, then Sandra got the milk. It is unlikely that if Brian is a frog, or Mary went to the office, then Lily is white.
hypothesis: It is probably not the case that either Sandra got the milk, or Lily is white.
valid_hypothesis: It is probably not the case that either Sandra got the milk, or Lily is white.
invalid_hypothesis: There is a very good chance that either Sandra got the milk, or Lily is white.
hypothesis_assertion: Either Sandra got the milk, or Lily is white.