context: It is highly unlikely that Sandra left the football. It is impossible that Brian is green. There is almost no chance that Jeff dropped the apple.
hypothesis: It is highly unlikely that brian is green, or Sandra left the football.
valid_hypothesis: It is highly unlikely that brian is green, or Sandra left the football.
invalid_hypothesis: Chances are about even that brian is green, or Sandra left the football.
hypothesis_assertion: Brian is green, or Sandra left the football.