context: It is certain that Mary moved to the office. Chances are about even that Brian is yellow. It is almost certain that Bernhard is white.
hypothesis: It is impossible that brian is yellow, or Bernhard is white.
valid_hypothesis: It is almost certain that brian is yellow, or Bernhard is white.
invalid_hypothesis: It is impossible that brian is yellow, or Bernhard is white.
hypothesis_assertion: Brian is yellow, or Bernhard is white.