context: There is almost no chance that Greg is white. It is improbable that Winona is a sheep. It is probably the case that John dropped the milk.
hypothesis: It is probable that greg is white, or John dropped the milk.
valid_hypothesis: It is probable that greg is white, or John dropped the milk.
invalid_hypothesis: It is probably not the case that greg is white, or John dropped the milk.
hypothesis_assertion: Greg is white, or John dropped the milk.