Detailed Instructions: 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.
Problem:Given Relationship: 'be province of', Sentence: 'Considered by many aficionados to be the best tea in China , it grows in its namesake village of Longjing in Hangzhou , the capital of east China 's Zhejiang province .'
Solution:
province