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Pittsburgh 's superintendent , Richard C. Wallace , who arrived in 1980 as an outsider to a city enmeshed in a bitter dispute over school desegregation , helped move the school system beyond that dispute and establish it as a national model of reform .
 Richard C. Wallace, Pittsburgh
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: Organization based in, Located in, Live in, Work for, Kill 
Text: {0} 
Answer:
 Richard C. Wallace, Pittsburgh