context: It is probable that Bernhard is white. We doubt that Lily is green. Chances are slight that Greg is a frog. It is probably the case that if Greg is a frog, and Bernhard is white, then Sandra took the apple. There is almost no chance that if either Greg is a frog, or Lily is green, then Bill dropped the milk. It is highly likely that if either Lily is green, or Greg is a frog, then Julius is a swan.
hypothesis: It is impossible that lily is green, and Bill dropped the milk.
valid_hypothesis: It is impossible that lily is green, and Bill dropped the milk.
invalid_hypothesis: It is almost certain that lily is green, and Bill dropped the milk.
hypothesis_assertion: Lily is green, and Bill dropped the milk.