1893
about 40 animals in a herd of 3050 swine herd ( approximately 1.3 % ) contracted the virus .
 animals, herd
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: component whole, NA, instrument agency, member collection, cause effect, entity destination, content container, message topic, product producer, entity origin 
Text: {0} 
Answer:
 animals, herd