context: Chances are about even that Julius is gray. We believe that Mary took the apple. It is probably the case that Lily is green. It is probably not the case that if Lily is green, and Mary took the apple, then Jason is bored. It is unlikely that if either Julius is gray, or Mary took the apple, then Brian is gray. It is probable that if Julius is gray, and Lily is green, then Greg is white.
hypothesis: There is a very good chance that greg is white, or Mary took the apple.
valid_hypothesis: There is a very good chance that greg is white, or Mary took the apple.
invalid_hypothesis: There is almost no chance that greg is white, or Mary took the apple.
hypothesis_assertion: Greg is white, or Mary took the apple.