12577
 Tom O'Rourke , director of the Health Department in Black Hawk County , Iowa , said that preliminary tests showed the cause to be E. coli , but there was no evidence to suggest that the contamination is linked to the cases in New York , New Jersey and four other states . 
 location contains: Iowa, Black Hawk County
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:  Iowa, Black Hawk County 
Answer:
 location contains: Iowa, Black Hawk County