context: It is probably not the case that Brian is a lion. It is probably not the case that Greg is white. We doubt that Julius is a frog.
hypothesis: It is highly unlikely that greg is white, and Brian is a lion.
valid_hypothesis: It is highly unlikely that greg is white, and Brian is a lion.
invalid_hypothesis: It is probably the case that greg is white, and Brian is a lion.
hypothesis_assertion: Greg is white, and Brian is a lion.