73412
The NCS is represented in nineteen countries and is the reference norm for color designation in Sweden ( since 1979 ) , Norway ( since 1984 ) , Spain ( since 1994 ) and South Africa ( since 2004 ) .
 Sweden, Norway, Spain, South Africa
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Sweden, Norway, Spain, South Africa