context: It is likely that Brian is gray. There is almost no chance that Sandra dropped the apple. There is a better than even chance that Greg is a swan.
hypothesis: Chances are about even that either Brian is gray, or Greg is a swan.
valid_hypothesis: Chances are about even that either Brian is gray, or Greg is a swan.
invalid_hypothesis: It is impossible that either Brian is gray, or Greg is a swan.
hypothesis_assertion: Either Brian is gray, or Greg is a swan.