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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 .
 product producer: shadows, sun
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: 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:
 product producer: shadows, sun