21065
Estimated volume was a light 2.4 million ounces .
 a light 2.4 million ounces
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
Answer:
 a light 2.4 million ounces