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.

Example Input: Given Relationship: 'be officer of', Sentence: 'Previously , Mark also served as Vice President - Finance and Chief Financial Officer for Oklahoma Christian University and Vice President , Corporate Controller for Crested Butte Mountain Resort .'
Example Output: Officer

Example Input: Given Relationship: 'be part of', Sentence: 'Finland was part of the Russian Empire until the end of WW I. i .e .1917 .'
Example Output: part

Example Input: Given Relationship: 'invade', Sentence: 'In 2003 , the United States , under President Bush , invaded Iraq to change the regime .'
Example Output:
invaded