context: It is probably the case that Greg is green. Chances are slight that Brian is a lion. It is impossible that Daniel left the apple. There is almost no chance that if either Greg is green, or Daniel left the apple, then Mary went to the hallway. It is impossible that if Daniel left the apple, and Greg is green, then John discarded the apple. It is almost certain that if either Greg is green, or Brian is a lion, then Lily is a swan.
hypothesis: Chances are slight that lily is a swan, or Mary went to the hallway.
valid_hypothesis: There is a better than even chance that lily is a swan, or Mary went to the hallway.
invalid_hypothesis: Chances are slight that lily is a swan, or Mary went to the hallway.
hypothesis_assertion: Lily is a swan, or Mary went to the hallway.