convert all values in each set to int to make .difference() work
convert all values in each set to int to make .difference() work

unicef/rhizome,unicef/polio,unicef/polio,unicef/rhizome,SeedScientific/polio,unicef/rhizome,SeedScientific/polio,unicef/rhizome,unicef/polio,SeedScientific/polio,unicef/polio,SeedScientific/polio,SeedScientific/polio