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 options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Shanghai, China; China, Shanghai 
Answer:
 administrative division of country: Shanghai, China; country of administrative divisions: China, Shanghai