context: It is likely that Greg is yellow. It is highly likely that Brian is green. It is improbable that Bernhard is a swan.
hypothesis: It is almost certain that brian is green, or Greg is yellow.
valid_hypothesis: It is almost certain that brian is green, or Greg is yellow.
invalid_hypothesis: Chances are about even that brian is green, or Greg is yellow.
hypothesis_assertion: Brian is green, or Greg is yellow.