19404
 The researchers used a questionnaire to interview a random sample of 351 people ages 20 to 80 in the Vancouver , British Columbia , area , asking about their dog ownership and level of physical activity . 
 British Columbia, Vancouver
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:
 British Columbia, Vancouver