18723
Where levees were breached and battered away by Hurricane Katrina 's surge and waves , millions of cubic yards of new soil have been put into place along more than half the 350-mile levee system , from the shores of Lake Pontchartrain to the swamps at the southern tip of Louisiana .
 location contains: Louisiana, Lake Pontchartrain
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:  Louisiana, Lake Pontchartrain 
Answer:
 location contains: Louisiana, Lake Pontchartrain