instruction:
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.
question:
Given Relationship: 'be secretary of', Sentence: 'He appointed Colin Powell as Secretary of State , Paul O'Neill as Secretary of the Treasury , and Donald Rumsfeld as the Secretary of Defense .'
answer:
Secretary


question:
Given Relationship: 'declare war on', Sentence: 'When the United States declared war on Germany on April 6 , 1917 , Hemingway tried to enlist in the army .'
answer:
declared


question:
Given Relationship: 'be president of', Sentence: 'Al Gore , duly elected 2004 President of the United States , and winner of the Nobel Peace Prize , has become a world-renown ambassador of real change .'
answer:

President