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In recent weeks , American officials have compiled reports detailing how China has carefully analyzed the strengths and weaknesses of the United States military to focus its growing spending on weapons systems that could exploit perceived American weaknesses in case the United States ever responds to fighting in Taiwan .
 Taiwan, China; China, Taiwan
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:
 Taiwan, China; China, Taiwan