7458
He was later trained by professional wrestler and trainer  Killer Kowalski  in  Malden  Massachusetts .
 Killer Kowalski, Malden
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 Killer Kowalski, Malden