17214
 According to a federal official who would not allow his name to be used , the investigators have visited hundreds of sites in Washington , New York , Chicago , Detroit , Las Vegas and Seattle on multiple occasions , as well other locations for high-profile events like the Super Bowl . 
 location contains: Washington, Seattle
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:  Washington, Seattle 
Answer:
 location contains: Washington, Seattle