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.

Example Input: Given Relationship: 'be president of', Sentence: 'At noon EST , Barack H. Obama became the 44th president of the United States of America .'
Example Output: president

Example Input: Given Relationship: 'be professor of', Sentence: 'Your nerves learn to communicate more effectively with your muscle cells , allowing the muscle to recruit more cells during each contraction , says Mark A. W. Andrews , PhD , associate professor of physiology at Lake Erie College of Osteopathic Medicine in Erie , Pa .'
Example Output: professor

Example Input: Given Relationship: 'return to', Sentence: 'Paul Ubana Jones has just returned from playing in Europe , mainly in Spain where he supported Mory Kante and Paco de Lucia before huge audiences .'
Example Output:
returned