instruction:
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.
question:
Given Relationship: 'be mayor of', Sentence: 'Former New York City mayor Rudy Giuliani joined in the mockery .'
answer:
mayor


question:
Given Relationship: 'operate in', Sentence: 'The Group operates around the world from production bases in the United Kingdom , the United States , Belgium , South Africa , China , Australia and New Zealand .'
answer:
operates


question:
Given Relationship: 'be use in', Sentence: 'PAL is used by the Middle East , half of Africa and some countries in Eastern Europe .'
answer:

used