2457
The Shanghai service is British Airways ' first new long-haul route since late 2002 Boeing says the Asia-Pacific region , dominated by China , will account for 36 percent of the 25,700 new aircraft , worth $ 2.1 trillion , that it projects will be ordered in the next 20 years .
 China, Shanghai; Shanghai, China; China, Shanghai
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:
 China, Shanghai; Shanghai, China; China, Shanghai