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 branch of', Sentence: 'Hamas , the Palestinian branch of the Muslim Brotherhood , the organization that assassinated Anwar Sadat and spawned al Qaeda and a host of other terrorist groups , runs other camps .'
answer:
branch


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: 'serve in', Sentence: 'John served in the U.S. Navy during World War 2 , prior to going to work for Westinghouse in Sunnyvale , California .'
answer:

served