11835
 If anything , though , the experience of Guiyang reveals how difficult a task China faces in trying to fine-tune its 25-year-old '' one-child policy , '' one of the most ambitious social engineering measures ever attempted . 
 location contains: China, Guiyang
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:
 location contains: China, Guiyang