context: Chances are slight that Julius is yellow. It is improbable that Mary left the football. There is a better than even chance that Winona is a cat.
hypothesis: There is almost no chance that julius is yellow, and Mary left the football.
valid_hypothesis: There is almost no chance that julius is yellow, and Mary left the football.
invalid_hypothesis: It is certain that julius is yellow, and Mary left the football.
hypothesis_assertion: Julius is yellow, and Mary left the football.