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: Consider Input: Given Relationship: 'attack', Sentence: 'The U.S. has pledged to warn Israel of any attack against Iraq .'

Output: attack

Input: Consider Input: Given Relationship: 'fire on', Sentence: 'The war began when a Confederate artillery battery fired on the Union-held Fort Sumter .'

Output: fired

Input: Consider Input: Given Relationship: 'be secretary-general of', Sentence: 'Secretary-General Ban Ki-moon appointed Kiyotaka Akasaka of Japan as United Nations Under-Secretary-General for Communications and Public Information on April 1 2007 .'
Output: Secretary-General