Each group represented a time in the history of legal services -- The Past (20 years ago), The Present and The Future (10 years from now).
The first group represents the longest time span in the history of legal services.
mnli hypothesis: The first group represents the longest time span in the history of legal services. premise: Each group represented a time in the history of legal services -- The Past (20 years ago), The Present and The Future (10 years from now).