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using the latest techniques of a science known as tissue engineering , researchers at the university of boston recently grew a human ear on the back of a mouse -- apparently with no adverse effects to the hybrid rodent .
 product producer: researchers, ear
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: researchers, ear