context: There is a better than even chance that John discarded the milk. Chances are slight that Greg is a swan. It is certain that Daniel left the apple. It is almost certain that if Daniel left the apple, or John discarded the milk, then Julius is a rhino. It is unlikely that if Greg is a swan, and Daniel left the apple, then Mary moved to the office. Chances are slight that if Daniel left the apple, and Greg is a swan, then Brian is white.
hypothesis: It is highly unlikely that john discarded the milk, and Greg is a swan.
valid_hypothesis: It is highly unlikely that john discarded the milk, and Greg is a swan.
invalid_hypothesis: It is highly likely that john discarded the milk, and Greg is a swan.
hypothesis_assertion: John discarded the milk, and Greg is a swan.