Many commercial firms, in recognition of the physical impact and disruption of family life that results from frequent travel, allow their employees to keep frequent flyer awards.
No commercial firms allow their employees to keep their frequent flyer awards.
mnli hypothesis: No commercial firms allow their employees to keep their frequent flyer awards. premise: Many commercial firms, in recognition of the physical impact and disruption of family life that results from frequent travel, allow their employees to keep frequent flyer awards.