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

Output: Chief


Input: Consider Input: Given Relationship: 'operate in', Sentence: 'This website is owned and operated by Lafarge North America Inc. , a Lafarge Group company .'

Output: operated


Input: Consider Input: Given Relationship: 'lead', Sentence: 'Our most recent poll of polls shows Obama with a five-percent lead over McCain .'


Output: lead