context: It is almost certain that Julius is a rhino. There is a very good chance that Sandra got the football. It is improbable that Greg is green.
hypothesis: It is likely that greg is green, and Sandra got the football.
valid_hypothesis: Chances are slight that greg is green, and Sandra got the football.
invalid_hypothesis: It is likely that greg is green, and Sandra got the football.
hypothesis_assertion: Greg is green, and Sandra got the football.