context: It is probably not the case that Bill went to the office. There is a very good chance that Mary is in the garden. It is probably not the case that Sandra took the football. It is certain that if Sandra took the football, and Bill went to the office, then John discarded the milk. It is highly likely that if Mary is in the garden, or Sandra took the football, then Greg is yellow. It is improbable that if Mary is in the garden, or Sandra took the football, then Julius is gray.
hypothesis: Chances are slight that either Greg is yellow, or Julius is gray.
valid_hypothesis: It is probably the case that either Greg is yellow, or Julius is gray.
invalid_hypothesis: Chances are slight that either Greg is yellow, or Julius is gray.
hypothesis_assertion: Either Greg is yellow, or Julius is gray.