78879
There are several recordings with Maria Callas in the title role , including two versions conducted by Tullio Serafin ( 1953 and 1959 ) and one by Herbert von Karajan ( 1955 ) .
 Maria Callas, Tullio Serafin, Herbert von Karajan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Maria Callas, Tullio Serafin, Herbert von Karajan