75899
An example would be the famous Van Cliburn International Piano Competition , which traditionally offers contestants a choice of two D-274s owned by the Van Cliburn Foundation , supplemented with another choice from an outside source .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None