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About 1556 he created three engravings with historical or mythological allusions , the Bull of Phalaris , Hasdrubal 's Wife Throwing Herself on the Pyre and Phocas Led Captive before Heraclius .
 Hasdrubal, Phocas, Heraclius
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hasdrubal, Phocas, Heraclius