context: It is almost certain that Greg is a lion. There is a very good chance that Jeff moved to the office. It is certain that Brian is gray.
hypothesis: It is certain that brian is gray, or Jeff moved to the office.
valid_hypothesis: It is certain that brian is gray, or Jeff moved to the office.
invalid_hypothesis: Chances are slight that brian is gray, or Jeff moved to the office.
hypothesis_assertion: Brian is gray, or Jeff moved to the office.