context: There is almost no chance that Daniel left the football. Chances are about even that Mary went to the garden. It is unlikely that Greg is green.
hypothesis: It is probably the case that either Greg is green, or Daniel left the football.
valid_hypothesis: It is unlikely that either Greg is green, or Daniel left the football.
invalid_hypothesis: It is probably the case that either Greg is green, or Daniel left the football.
hypothesis_assertion: Either Greg is green, or Daniel left the football.