context: It is almost certain that Julius is gray. It is certain that Greg is white. Chances are about even that Sandra left the milk.
hypothesis: It is certain that sandra left the milk, or Greg is white.
valid_hypothesis: It is certain that sandra left the milk, or Greg is white.
invalid_hypothesis: It is improbable that sandra left the milk, or Greg is white.
hypothesis_assertion: Sandra left the milk, or Greg is white.