4042
some of you remember the story of william kamkwamba , the boy who at 14 built a 12-watt windmill from improvised materials for his famine-stricken home in africa .
 boy, windmill
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:
 boy, windmill