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When his son Jesús Alvarado Nieves made his debut in 1975 Shadito Cruz gave the ring character to his son and instead of wrestling decided on training young wrestlers instead , including most of his six sons for their professional wrestling careers as well as become a referee .
 Jesús Alvarado Nieves
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Jesús Alvarado Nieves