Women are so large a part of the labor force that it is hard to believe that this could be true of the total if it were not also true of women.
It would be hard to think that it weren't true of the whole work force if it wasn't true of women.
mnli hypothesis: It would be hard to think that it weren't true of the whole work force if it wasn't true of women. premise: Women are so large a part of the labor force that it is hard to believe that this could be true of the total if it were not also true of women.