171623
Although the film , which opened at the Emperor Theater in Vienna on December 21 , 1931 , was a critical and commercial success , in later years Preminger described it as a juvenile folly he preferred to forget .
 Preminger
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Preminger