From the given sentence, extract the phrase (often noun or verb) that carries the given relationship. The generated phrase should be present in the sentence.
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Question: Given Relationship: 'be centre of', Sentence: 'Although it is thought that Tokyo is the fashion centre of Japan , fashion experts say Osaka is where the big trends actually start .'

Answer: centre

Question: Given Relationship: 'join', Sentence: 'Turkey 's effort to join the European Union has already been an up and down affair .'

Answer: join

Question: Given Relationship: 'write in', Sentence: 'Thomas Friedman , writing in the New York Times , called the demonstrators at Seattle " a Noah 's ark of flat-earth advocates . "'

Answer:
writing