9181
 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: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
 Entity Pairs:  Colorado, Denver 
Answer:
 location contains: Colorado, Denver