16984
Senior police officers have said recently that hundreds of potential terrorists are in Britain , and some antiterror specialists have said they fear an attack before the British election , as happened in Madrid last March 11 , three days before Spain 's vote . ''
 Spain, Madrid; Spain, Madrid
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 Spain, Madrid; Spain, Madrid