context: It is probably the case that Winona is a wolf. It is highly unlikely that Sandra grabbed the milk. Chances are slight that Brian is yellow.
hypothesis: It is probably the case that brian is yellow, and Sandra grabbed the milk.
valid_hypothesis: It is impossible that brian is yellow, and Sandra grabbed the milk.
invalid_hypothesis: It is probably the case that brian is yellow, and Sandra grabbed the milk.
hypothesis_assertion: Brian is yellow, and Sandra grabbed the milk.