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 .
 city of headquarters: Washington Hospital Center, Washington
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: 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:
 city of headquarters: Washington Hospital Center, Washington