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: 'present at', Sentence: 'Paper presented at the National Educational Computing Conference , Seattle , WA .'
Example Output: presented

Example Input: Given Relationship: 'be president of', Sentence: 'Afghanistan president Hamid Karzai met Prime Minister Manmohan Singh at the Hyderabad House in New Delhi on Monday .'
Example Output: president

Example Input: Given Relationship: 'be president of', Sentence: 'Today , we formally swore in Barack Obama as the 44th president of the United States of America .'
Example Output:
president