44023
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: 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:  Iowa, Black Hawk County 
Answer:
 location contains: Iowa, Black Hawk County