14784
Some schemes of musical instrument classification , such as the Hornbostel-Sachs system , are based on a hierarchy of instrument families and families of families .
 Hornbostel-Sachs
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hornbostel-Sachs