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

Given Relationship: 'be president of', Sentence: 'A month after writing this , he became President of the United States when Richard M. Nixon resigned .'
President

Given Relationship: 'be direct to', Sentence: 'Employment Inquiries regarding employment opportunities should be directed to the Director , Human Resources and Labor Relations .'

directed