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: 'make', Sentence: 'Jenny made the announcement that her baby was an alien.'
Example output: made
Example explanation: The output relationship - made, is a correct verb form of the given relationship - make, and it is also used in the given sentence
Q: Given Relationship: 'be president of', Sentence: 'But meantime , just for a few days , let us take a breather , and revel on the very fact that Barack Obama President-elect , with his genetic heritage , has re-crafted US history by simply being the 44th US President of the United States of America .'
A:
President