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: 'Barack Obama today becomes the first black president of the United States of America .'

Output: president


Input: Consider Input: Given Relationship: 'report to', Sentence: 'The Director shall report to the Congress annually on the use of statutory invention registrations .'

Output: report


Input: Consider Input: Given Relationship: 'be chairman of', Sentence: 'Bartz was most recently executive chairman of the board of Autodesk , a CAD software company , where she served as chairman , president and CEO for 14 years until 2006 .'


Output: chairman