1848
According to David E. Weinstein , a specialist on Japan in the economics department at Columbia University , Hiroshima lost about 20 to 30 percent of its population after the atomic bomb attack of 1945 .
 location contains: Japan, Hiroshima
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:
 location contains: Japan, Hiroshima