266969
Lucheni claims that once Franz Joseph , the Emperor of Austria , picks Elisabeth as his bride - for once opposing his domineering mother Sophie - he began a chain of events that eventually toppled the Habsburg empire .
 Franz Joseph, Emperor, Austria, Elisabeth
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Franz Joseph, Emperor, Austria, Elisabeth