18908
In another territorial dispute with China , over the Senkaku Islands , Japan 's largest right-wing group , Nihon Seinen-sha , built a lighthouse there 27 years ago and traveled to it regularly for repairs .
 location contains: Japan, Senkaku Islands
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, Senkaku Islands