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.

Q: Given Relationship: 'be chief of', Sentence: 'We work for the Chief Executive Officer also known as The President of the United States .'

A: Chief
****
Q: Given Relationship: 'be elect by', Sentence: 'In autumn of the same year Lincoln was elected President of the United States , and this great victory for the Abolitionists immediately led to the secession of the Southern States and the civil war between the North and South .'

A: elected
****
Q: Given Relationship: 'begin on', Sentence: 'Fall session begins October 27th and runs from 3:30 - 6:30 p.m. Registration begins September 2 , 2008 .'

A:
begins
****