context: It is probably not the case that Mary went to the kitchen. There is a very good chance that Bill left the milk. It is impossible that Brian is green.
hypothesis: There is a very good chance that either Brian is green, or Bill left the milk.
valid_hypothesis: There is a very good chance that either Brian is green, or Bill left the milk.
invalid_hypothesis: It is impossible that either Brian is green, or Bill left the milk.
hypothesis_assertion: Either Brian is green, or Bill left the milk.