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.

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 .'
branch

Given Relationship: 'be region of', Sentence: 'Umbria is the hilly region of central Italy to the east of its more publicized neighbor Tuscany .'
region

Given Relationship: 'be research arm of', Sentence: 'National numbers from the Alan Guttmacher Institute , a research arm of Planned Parenthood , and the Center for Disease Control reveal that the overwhelming majority of abortion clinics are located in metropolitan areas .'

research