3863
the `` intihuatana '' ( in quechua = place where the sun is bonded ) is a solar observatory that allowed the incas to keep track of the seasons of the year and the flow of time based on the shadows caused by the sun over the stone .
 shadows, sun
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:
 shadows, sun