context: Chances are about even that Bernhard is yellow. There is a very good chance that Greg is a swan. There is almost no chance that Sandra left the football.
hypothesis: It is highly likely that greg is a swan, or Bernhard is yellow.
valid_hypothesis: It is highly likely that greg is a swan, or Bernhard is yellow.
invalid_hypothesis: It is probably not the case that greg is a swan, or Bernhard is yellow.
hypothesis_assertion: Greg is a swan, or Bernhard is yellow.