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This formula became possible because Bettino Craxi 's Italian Socialist Party and Valerio Zanone 's Italian Liberal Party accepted to form their first republican government together , moderating their positions and passing the opposition that had always divided them .
 Bettino Craxi, Italian Socialist Party, Valerio Zanone, Italian Liberal Party
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:
 Bettino Craxi, Italian Socialist Party, Valerio Zanone, Italian Liberal Party