context: We believe that John left the milk. It is highly likely that Lily is a frog. It is probably not the case that Greg is a rhino. It is probably the case that if Greg is a rhino, or Lily is a frog, then Mary went to the kitchen. It is almost certain that if Greg is a rhino, and John left the milk, then Bernhard is green. There is a better than even chance that if either Lily is a frog, or John left the milk, then Brian is a swan.
hypothesis: It is almost certain that john left the milk, and Mary went to the kitchen.
valid_hypothesis: Chances are about even that john left the milk, and Mary went to the kitchen.
invalid_hypothesis: It is almost certain that john left the milk, and Mary went to the kitchen.
hypothesis_assertion: John left the milk, and Mary went to the kitchen.