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: 'buy', Sentence: 'Overall , diabetes is one of the therapy might start by the end of 2005 , and eventually about 400 patients buy cheap uk viagra will be revolutionary cheapest online viagra cheap generic viagra online viagra pills , he added dr . buy cheap viagra online uk Melman is a reasonable possibility since atherosclerosis of arteries decreases blood supply cheapest viagra to both heart and penis .'
answer:
buy

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: 'act for', Sentence: 'The Second Vice President shall act as President in all duties if the President and the First Vice President are absent or are unable to act .'
answer:
act