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egyptian archaeologists discovered a new set of tombs belonging to the workers who built the great pyramids , shedding light on how the labourers lived and ate more than 4,000 years ago .
 set, tombs
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:
 set, tombs