context: We believe that John got the milk. It is almost certain that Greg is yellow. There is almost no chance that Brian is green.
hypothesis: We believe that either John got the milk, or Brian is green.
valid_hypothesis: We believe that either John got the milk, or Brian is green.
invalid_hypothesis: It is unlikely that either John got the milk, or Brian is green.
hypothesis_assertion: Either John got the milk, or Brian is green.