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: 'fly from', Sentence: 'Aer Arann are to fly from Blackpool to Dublin following Ryanair 's decision to quit Blackpool Airport .'
[A]: from


[Q]: Given Relationship: 'start in', Sentence: 'One example is the Kershaw County School District in South Carolina , which started using the Dunn and Dunn model in 1996 .'
[A]:
started