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 According to a study by Dr. Robert P. Heaney , a calcium expert at Creighton University in Omaha , much of the research linking caffeine consumption to reduced bone mass was conducted on elderly people whose diets were low on milk and other sources of calcium largely because they drank so much caffeine-laden coffee and soda instead . 
 Omaha, Creighton University
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 Omaha, Creighton University