16904
Many of the displaced musicians say that what made New Orleans special was the unbroken tradition of its musical heritage , extending back to the days before the Civil War , when slaves would gather on Sundays in places like Congo Square to play music in celebration or in mourning .
 location contains: New Orleans, Congo Square
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: New Orleans, Congo Square