context: It is certain that Greg is a swan. It is highly unlikely that Mary took the football. There is little chance that Bernhard is gray.
hypothesis: It is highly likely that greg is a swan, and Bernhard is gray.
valid_hypothesis: There is little chance that greg is a swan, and Bernhard is gray.
invalid_hypothesis: It is highly likely that greg is a swan, and Bernhard is gray.
hypothesis_assertion: Greg is a swan, and Bernhard is gray.