63496
According to the composer , this work is the culmination of his two other biographical operas , " Einstein on the Beach " ( about Albert Einstein ) and " Satyagraha " ( about Mahatma Gandhi ) .
 Einstein on the Beach, Albert Einstein, Satyagraha, Mahatma Gandhi
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:
 Einstein on the Beach, Albert Einstein, Satyagraha, Mahatma Gandhi