1031
In August 1983 Morty Black replaced  Steinar Eikum  on bass and the following year American vocalist Tony Harnell became  TNT  's new frontman making his debut on their album Knights of the New Thunder .
 Steinar Eikum, TNT
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:
 Steinar Eikum, TNT