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 The countryside is rife with conflicts over the use of land now that agricultural land is less productive , '' said Alexander von Hoffman , a senior fellow at Harvard University 's Joint Center for Housing Studies in Cambridge , Mass. '' The other force is that with the affluence created over the last 20 years , Americans are willing and able to indulge their love of rural scenery . '' 
 location contains: Cambridge, Harvard University
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "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} 
Answer:
 location contains: Cambridge, Harvard University