3024
Even before the biblical-scale assembly line of Long Island 's Levittown -LRB- built in the late 40 's and early 50 's and still , at 17,000 houses , among the most ambitious residential construction projects in American history -RRB- , Sears , Roebuck & Company shipped more than 100,000 mass-produced catalog houses to places all over the country .
 location contains: Long Island, Levittown
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Long Island, Levittown 
Answer:
 location contains: Long Island, Levittown