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In South Africa , the grading system used in secondary schools until 2008 ( when the Outcomes Based Education or OBE curriculum took over ) was as follows : The OBE system , when in its experimental stages , originally used a scale from 1 - 4 ( a pass being a 3 and a ' 1st class pass ' being above 70 % ) , but this system was considered far too coarse and replaced by a scale from 1 to 7 .
 South Africa
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 South Africa