context: It is highly likely that Daniel got the milk. It is highly likely that Greg is white. We doubt that Julius is a rhino. It is certain that if Greg is white, and Julius is a rhino, then Brian is a swan. Chances are about even that if Greg is white, and Julius is a rhino, then John picked up the apple. It is probable that if Daniel got the milk, and Greg is white, then Mary went to the office.
hypothesis: It is improbable that greg is white, or John picked up the apple.
valid_hypothesis: It is highly likely that greg is white, or John picked up the apple.
invalid_hypothesis: It is improbable that greg is white, or John picked up the apple.
hypothesis_assertion: Greg is white, or John picked up the apple.