3921
sorcha , the seventh daughter of a seventh son , had to save her brothers from their stepmother , who turned them into swans for many years .
 stepmother, swans
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:
 stepmother, swans