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.
Q: Given Relationship: 'be suburb of', Sentence: 'In a small advisory referendum sponsored by Green candidates in the Chicago collar suburbs in Berwyn Township , citizens voted by a 2-1 margin to phase out nuclear power in Illinois -- the most nuclear reliant state in the US -- and replace it with renewable energy resources .'
A:
suburbs