context: There is almost no chance that Julius is a rhino. It is improbable that Greg is gray. It is almost certain that Brian is a swan.
hypothesis: It is highly unlikely that greg is gray, or Brian is a swan.
valid_hypothesis: It is almost certain that greg is gray, or Brian is a swan.
invalid_hypothesis: It is highly unlikely that greg is gray, or Brian is a swan.
hypothesis_assertion: Greg is gray, or Brian is a swan.