anchor.diff:  "NUTS_PT181","Alentejo Litoral","Portugal","NUTS3"
   "NUTS_FRC14","Yonne","France","NUTS3"
   "NUTS_FRJ12","Gard","France","NUTS3"
  -"NUTS_CZ031","Jihocecký kraj","Czechia","NUTS3"
  +"NUTS_CZ031","Jihocecký kraj","Czech Republic","NUTS3"
   "NUTS_CH054","Appenzell Innerrhoden","Switzerland","NUTS3"
   "NUTS_FRH04","Morbihan","France","NUTS3"
   "NUTS_DK013","Nordsjælland","Denmark","NUTS3"
   "NUTS_FRG05","Vendée","France","NUTS3"
   "NUTS_SE212","Kronobergs län","Sweden","NUTS3"
  -"NUTS_CZ010","Hlavní mesto Praha","Czechia","NUTS3"
  -"NUTS_CZ042","Ústecký kraj","Czechia","NUTS3"
  +"NUTS_CZ010","Hlavní mesto Praha","Czech Republic","NUTS3"
  +"NUTS_CZ042","Ústecký kraj","Czech Republic","NUTS3"
   "NUTS_BG324","Razgrad","Bulgaria","NUTS3"
   "NUTS_PT11B","Alto Tâmega","Portugal","NUTS3"
   "NUTS_FRE12","Pas-de-Calais","France","NUTS3"
  -"NUTS_CZ080","Moravskoslezský kraj","Czechia","NUTS3"
  +"NUTS_CZ080","Moravskoslezský kraj","Czech Republic","NUTS3"
   "NUTS_SE224","Skåne län","Sweden","NUTS3"
   "NUTS_PT186","Alto Alentejo","Portugal","NUTS3"
   "NUTS_BG343","Yambol","Bulgaria","NUTS3"
  
positive.code: "NUTS_BG331","Varna","Bulgaria","NUTS3"
  "NUTS_BG421","Plovdiv","Bulgaria","NUTS3"
  "NUTS_FRK14","Puy-de-Dôme","France","NUTS3"
  "NUTS_CZ064","Jihomoravský kraj","Czechia","NUTS3"
  "NUTS_FI1D7","Lappi","Finland","NUTS3"
  "NUTS_LT029","Utenos apskritis","Lithuania","NUTS3"
  "NUTS_BG413","Blagoevgrad","Bulgaria","NUTS3"
  
negative.code: "NUTS_CH061","Luzern","Switzerland","NUTS3"
  "NUTS_FRD13","Orne","France","NUTS3"
  "NUTS_FRB04","Indre-et-Loire","France","NUTS3"
  "NUTS_CZ051","Liberecký kraj","Czech Republic","NUTS3"
  "NUTS_FRY10","Guadeloupe","France","NUTS3"
  "NUTS_DK022","Vest- og Sydsjælland","Denmark","NUTS3"
  "NUTS_FRJ26","Hautes-Pyrénées","France","NUTS3"
  