context: It is certain that Sandra left the milk. It is certain that Mary went to the garden. It is certain that Brian is gray.
hypothesis: It is likely that either Sandra left the milk, or Brian is gray.
valid_hypothesis: It is impossible that either Sandra left the milk, or Brian is gray.
invalid_hypothesis: It is likely that either Sandra left the milk, or Brian is gray.
hypothesis_assertion: Either Sandra left the milk, or Brian is gray.