context: We believe that Daniel left the milk. It is certain that Bill went to the garden. It is probably not the case that Brian is a swan.
hypothesis: It is certain that bill went to the garden, or Daniel left the milk.
valid_hypothesis: It is certain that bill went to the garden, or Daniel left the milk.
invalid_hypothesis: There is little chance that bill went to the garden, or Daniel left the milk.
hypothesis_assertion: Bill went to the garden, or Daniel left the milk.