context: It is probable that Mary dropped the milk. Chances are about even that Bernhard is green. There is a very good chance that Emily is a sheep. It is certain that if Mary dropped the milk, and Emily is a sheep, then Winona is a wolf. It is impossible that if Mary dropped the milk, or Emily is a sheep, then Lily is yellow. It is probable that if either Mary dropped the milk, or Bernhard is green, then Julius is white.
hypothesis: It is impossible that julius is white, or Mary dropped the milk.
valid_hypothesis: There is a very good chance that julius is white, or Mary dropped the milk.
invalid_hypothesis: It is impossible that julius is white, or Mary dropped the milk.
hypothesis_assertion: Julius is white, or Mary dropped the milk.