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 chairman of', Sentence: 'President Bush named his top economic advisor , Ben Bernanke to replace economic legend Alan Greenspan as the chairman of the Federal Reserve .'

Output: chairman

Input: Consider Input: Given Relationship: 'lose to', Sentence: 'John McCain agreed to carry on the FRP-Republican Party agreement , but lost to Barack Obama .'

Output: lost

Input: Consider Input: Given Relationship: 'be example of', Sentence: 'A good example of a WAN is the Internet .'
Output: example