context: There is almost no chance that Lily is white. Chances are slight that Mary dropped the milk. It is probably the case that Yann is tired. It is probable that if Mary dropped the milk, and Yann is tired, then Sandra took the apple. There is a better than even chance that if either Yann is tired, or Mary dropped the milk, then Brian is yellow. It is certain that if Lily is white, and Mary dropped the milk, then Bernhard is a frog.
hypothesis: There is almost no chance that brian is yellow, and Mary dropped the milk.
valid_hypothesis: There is almost no chance that brian is yellow, and Mary dropped the milk.
invalid_hypothesis: It is almost certain that brian is yellow, and Mary dropped the milk.
hypothesis_assertion: Brian is yellow, and Mary dropped the milk.