context: Chances are slight that Lily is a lion. There is almost no chance that Mary went to the kitchen. It is probably not the case that Greg is green. It is likely that if either Mary went to the kitchen, or Greg is green, then John left the milk. There is a very good chance that if Lily is a lion, and Mary went to the kitchen, then Bernhard is a swan. There is almost no chance that if Lily is a lion, or Mary went to the kitchen, then Brian is a rhino.
hypothesis: We doubt that greg is green, and John left the milk.
valid_hypothesis: We doubt that greg is green, and John left the milk.
invalid_hypothesis: It is probable that greg is green, and John left the milk.
hypothesis_assertion: Greg is green, and John left the milk.