instruction:
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.
question:
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 .'
answer:
chairman


question:
Given Relationship: 'reveal in', Sentence: 'A very careful and thorough research and scriptural study reveals that the God of Abraham , Isaac and Jacob is the pre-incarnate Christ .'
answer:
reveals


question:
Given Relationship: 'say of', Sentence: 'An Abraham Lincoln author and Barack Obama admirer says as a writer , Obama is no Lincoln .'
answer:

says