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Countdown '' has fueled rampant speculation among fans since its cover , depicting Batman cradling a body , was leaked in December ; but planning for the story began about two years ago , said Dan DiDio , the DC Comics vice president for editorial . ''
 Dan DiDio, DC Comics
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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} 
Answer:
 Dan DiDio, DC Comics