context: It is unlikely that Greg is a lion. It is probably the case that Mary left the football. There is little chance that Brian is yellow.
hypothesis: There is almost no chance that greg is a lion, and Brian is yellow.
valid_hypothesis: There is almost no chance that greg is a lion, and Brian is yellow.
invalid_hypothesis: It is highly likely that greg is a lion, and Brian is yellow.
hypothesis_assertion: Greg is a lion, and Brian is yellow.