context: We doubt that Mary went to the office. It is probably the case that Greg is a frog. It is unlikely that Winona is a cat. It is unlikely that if Greg is a frog, or Mary went to the office, then Bernhard is gray. It is probably the case that if either Winona is a cat, or Greg is a frog, then Lily is a swan. It is impossible that if either Mary went to the office, or Greg is a frog, then John left the milk.
hypothesis: It is impossible that john left the milk, and Mary went to the office.
valid_hypothesis: It is impossible that john left the milk, and Mary went to the office.
invalid_hypothesis: There is a better than even chance that john left the milk, and Mary went to the office.
hypothesis_assertion: John left the milk, and Mary went to the office.