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After signing his first contract with the Steelers , Reed said he asked the director of football operations , Kevin Colbert , if he could leave Pittsburgh to return home for more clothes . ''
 place of birth: Kevin Colbert, Pittsburgh
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
 Entity Pairs:  Kevin Colbert, Pittsburgh 
Answer:
 place of birth: Kevin Colbert, Pittsburgh