Definition: 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 king of', Sentence: 'Herodotus recounts the blunt advice of an advisor to Persian king Cyrus , about how to subdue a certain tribe - tell the fathers to become shopkeepers , & the sons to learn the flute & the harp , rather than war - you will make them all effeminate & easy to control .'
Output:
king