context: There is little chance that Sandra took the apple. It is probably not the case that Bernhard is yellow. It is impossible that Brian is white.
hypothesis: It is probably the case that brian is white, and Sandra took the apple.
valid_hypothesis: It is impossible that brian is white, and Sandra took the apple.
invalid_hypothesis: It is probably the case that brian is white, and Sandra took the apple.
hypothesis_assertion: Brian is white, and Sandra took the apple.