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.

Given Relationship: 'be president of', Sentence: 'At noon EST , Barack H. Obama became the 44th president of the United States of America .'
president

Given Relationship: 'begin in', Sentence: 'Three issues will be published during the Fall Semester beginning in August 2006 .'
beginning

Given Relationship: 'take control of', Sentence: 'Democrats who took control of Congress this year say the firings were politically motivated and have sought White House testimony and documents in a controversy that has led to bipartisan calls for Attorney General Alberto Gonzales to step down .'

control