context: Chances are slight that Greg is green. It is almost certain that Julius is a frog. It is probably not the case that Brian is a swan.
hypothesis: There is almost no chance that greg is green, and Brian is a swan.
valid_hypothesis: There is almost no chance that greg is green, and Brian is a swan.
invalid_hypothesis: There is a very good chance that greg is green, and Brian is a swan.
hypothesis_assertion: Greg is green, and Brian is a swan.