4840
The United States , which is Taiwan 's sole major ally and has long acted as an arbiter of cross-strait relations , welcomed Mr. Lien 's trip in principle , but urged China to open talks with Mr. Chen . ''
 administrative division of country: Taiwan, China; country of administrative divisions: China, Taiwan
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: 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:
 administrative division of country: Taiwan, China; country of administrative divisions: China, Taiwan