context: We doubt that Sandra left the football. We doubt that Fred dropped the apple. It is likely that Brian is green. There is a very good chance that if Fred dropped the apple, and Brian is green, then Daniel grabbed the apple. There is little chance that if Fred dropped the apple, and Sandra left the football, then Greg is a frog. There is a better than even chance that if Fred dropped the apple, and Sandra left the football, then Bernhard is a lion.
hypothesis: It is probably the case that fred dropped the apple, and Daniel grabbed the apple.
valid_hypothesis: It is improbable that fred dropped the apple, and Daniel grabbed the apple.
invalid_hypothesis: It is probably the case that fred dropped the apple, and Daniel grabbed the apple.
hypothesis_assertion: Fred dropped the apple, and Daniel grabbed the apple.