context: It is impossible that Greg is gray. There is a better than even chance that Brian is a rhino. It is highly unlikely that John moved to the garden.
hypothesis: Chances are about even that greg is gray, and Brian is a rhino.
valid_hypothesis: It is impossible that greg is gray, and Brian is a rhino.
invalid_hypothesis: Chances are about even that greg is gray, and Brian is a rhino.
hypothesis_assertion: Greg is gray, and Brian is a rhino.