context: It is probably not the case that Bernhard is yellow. There is almost no chance that Greg is a swan. There is a better than even chance that Brian is white. There is almost no chance that if Bernhard is yellow, or Brian is white, then Sandra dropped the milk. It is probably not the case that if Brian is white, and Bernhard is yellow, then Jeff discarded the milk. It is almost certain that if either Greg is a swan, or Bernhard is yellow, then John went to the office.
hypothesis: There is a better than even chance that either Sandra dropped the milk, or Brian is white.
valid_hypothesis: There is a better than even chance that either Sandra dropped the milk, or Brian is white.
invalid_hypothesis: There is little chance that either Sandra dropped the milk, or Brian is white.
hypothesis_assertion: Either Sandra dropped the milk, or Brian is white.