context: It is probably the case that Greg is yellow. There is little chance that Sandra got the football. There is a better than even chance that Brian is a lion.
hypothesis: There is almost no chance that greg is yellow, and Brian is a lion.
valid_hypothesis: Chances are about even that greg is yellow, and Brian is a lion.
invalid_hypothesis: There is almost no chance that greg is yellow, and Brian is a lion.
hypothesis_assertion: Greg is yellow, and Brian is a lion.