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The price of the OPEC basket of seven crudes stood at $ 24.20 a barrel on Thursday , against $ 23.47 on Wednesday , the OPECNA news agency said , quoting the OPEC secretariat .
 organization: OPEC; organization: OPECNA; organization: OPEC
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 organization: OPEC; organization: OPECNA; organization: OPEC