context: We doubt that Emily is a wolf. There is little chance that John discarded the milk. There is a better than even chance that Julius is gray. There is a very good chance that if John discarded the milk, or Julius is gray, then Mary dropped the apple. We doubt that if Emily is a wolf, or Julius is gray, then Greg is a rhino. There is a better than even chance that if John discarded the milk, or Emily is a wolf, then Bernhard is green.
hypothesis: It is improbable that greg is a rhino, and Julius is gray.
valid_hypothesis: It is improbable that greg is a rhino, and Julius is gray.
invalid_hypothesis: It is probable that greg is a rhino, and Julius is gray.
hypothesis_assertion: Greg is a rhino, and Julius is gray.