context: It is probably the case that Greg is a rhino. There is a better than even chance that Lily is white. It is probable that Mary went to the kitchen. It is impossible that if Lily is white, or Greg is a rhino, then Bernhard is a swan. It is impossible that if either Mary went to the kitchen, or Greg is a rhino, then Daniel left the milk. There is little chance that if Greg is a rhino, and Mary went to the kitchen, then Brian is a frog.
hypothesis: It is almost certain that mary went to the kitchen, and Bernhard is a swan.
valid_hypothesis: It is impossible that mary went to the kitchen, and Bernhard is a swan.
invalid_hypothesis: It is almost certain that mary went to the kitchen, and Bernhard is a swan.
hypothesis_assertion: Mary went to the kitchen, and Bernhard is a swan.