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 cause of', Sentence: 'The founder of Alive and Well Los Angeles has been on many TV shows promoting the fact that HIV is not the cause of AIDS .'
Example Output: cause

Example Input: Given Relationship: 'be locate in', Sentence: 'Located at The Hague , the International Court of Justice is the primary judicial organ of the United Nations .'
Example Output: Located

Example Input: Given Relationship: 'be son of', Sentence: 'Esau was the firstborn son of Isaac , a man of the world , who looked upon matters -- particularly matters surrounding his birthright -- as the world viewed them rather than as God viewed them .'
Example Output:
son