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 key to', Sentence: 'As present processes are thought to explain all past events , the Uniformitarianism slogan is " the present is the key to the past . "'

A: key
****
Q: Given Relationship: 'be language of', Sentence: 'English is the official language of Ghana and Gambia .'

A: language
****
Q: Given Relationship: 'be secretary of', Sentence: 'In the summer of 2006 , Henry Paulson left the helm of Goldman Sachs to become the third Treasury secretary of the Bush administration .'

A:
secretary
****