15061
Treatment was unsuccessful and he died of a pulmonary embolism at the  Washington Hospital Center  in  Washington  D.C. Gerald R. Warren Nixon's deputy press secretary stated that President Nixon was deeply saddened by the news .
 Washington Hospital Center, Washington
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:
 Washington Hospital Center, Washington