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 founder of', Sentence: 'The Nazis and people like Margaret Sanger , the founder of Planned Parenthood , believe in creating a perfect race .'
Example Output: founder

Example Input: Given Relationship: 'speak at', Sentence: 'It is true that Mahmod Ahmadinejad is scheduled to speak at Columbia this Monday .'
Example Output: speak

Example Input: Given Relationship: 'be president of', Sentence: 'Pakistan 's president Gen . Pervez Musharraf threatened yesterday to kill militant followers of an Islamic cleric who said he and his comrades prefer death to surrender .'
Example Output:
president