Instructions: 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: Given Relationship: 'be extension of', Sentence: 'Many Cubans kept a close eye on the US election and most viewed McCain as an extension of President George W Bush , who toughened the embargo by limiting how much money their US-based relatives could send home and how many times they could visit .'
Output:
extension