20470
 These are already starting to make blackouts less common elsewhere in China and hold the promise of eventually letting the electricity supply catch up with demand even here in the Pearl River Delta , which rivals the Yangtze River Delta around Shanghai as one of China 's two main export powerhouses . 
 administrative division of country: Shanghai, China; country of administrative divisions: China, Shanghai
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: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
Answer:
 administrative division of country: Shanghai, China; country of administrative divisions: China, Shanghai