context: It is almost certain that Sandra left the milk. It is probably the case that Bill went to the kitchen. We believe that Brian is white.
hypothesis: It is certain that sandra left the milk, or Bill went to the kitchen.
valid_hypothesis: It is certain that sandra left the milk, or Bill went to the kitchen.
invalid_hypothesis: There is almost no chance that sandra left the milk, or Bill went to the kitchen.
hypothesis_assertion: Sandra left the milk, or Bill went to the kitchen.