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.

Input: Consider Input: Given Relationship: 'be president of', Sentence: 'Now George W. Bush is the President of the United States .'

Output: President

Input: Consider Input: Given Relationship: 'be elect by', Sentence: 'In autumn of the same year Lincoln was elected President of the United States , and this great victory for the Abolitionists immediately led to the secession of the Southern States and the civil war between the North and South .'

Output: elected

Input: Consider Input: Given Relationship: 'be patriarch of', Sentence: 'Nestorius patriarch of Constantinople was condemned as a heretic by Cyril , bishop of Alexandria and around 200 bishops , .'
Output: patriarch