context: It is likely that Sandra got the football. There is a better than even chance that Mary moved to the garden. It is probable that Julius is a frog.
hypothesis: It is certain that either Mary moved to the garden, or Sandra got the football.
valid_hypothesis: Chances are about even that either Mary moved to the garden, or Sandra got the football.
invalid_hypothesis: It is certain that either Mary moved to the garden, or Sandra got the football.
hypothesis_assertion: Either Mary moved to the garden, or Sandra got the football.