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.

[EX 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 . "'
[EX A]: key

[EX Q]: Given Relationship: 'be elect by', Sentence: 'Our Board of Trustees serve in a voluntary capacity and are elected by our voluntary branches or co-opted for their expertise .'
[EX A]: elected

[EX Q]: Given Relationship: 'be member of', Sentence: 'New Zealand is a member state of the British Commonwealth , and has close ties with Australia .'
[EX A]:
member