5349
 The biggest challenges , however , lie in another direction altogether , when the line heads south for a 685-mile run to Lhasa , the capital of Tibet , over what is often called the roof of the world . 
 location contains: Tibet, Lhasa
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: Tibet, Lhasa