Given the task definition and input, reply with output. 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.

Given Relationship: 'be king of', Sentence: 'Elijah had been told by God to anoint Jehu king over Israel , but he had passed the responsibility on to Elisha , who in turn passed it on to an unnamed man from the company of prophets .'
king