10661
But the tribes are now offering Colorado a gift of $ 1 billion and are willing to give up their ancestral claims to nearly half of the state , all in exchange for a 500-acre piece of land near Denver on which they hope to build one of the world 's largest casinos , complete with a five-star hotel , a golf course , a mall and an Indian cultural center . ''
 location contains: Colorado, Denver
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:  Colorado, Denver 
Answer:
 location contains: Colorado, Denver