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But the two countries agreed Friday night to design and construct an advanced rock and gravel filter system for a lake outlet North Dakota has already built on Devils Lake to alleviate flooding that has become increasingly troublesome to local farmers and villages in recent years .
 location contains: North Dakota, Devils Lake
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:  North Dakota, Devils Lake 
Answer:
 location contains: North Dakota, Devils Lake