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 battle', Sentence: 'I nietzsche BACTRIM was battling Lyme , BACTRIM got in same tempra .'
battling

Given Relationship: 'invade', Sentence: 'In 2003 , the United States , under President Bush , invaded Iraq to change the regime .'
invaded

Given Relationship: 'operate in', Sentence: 'The panel discussion will be moderated by Professor Tim Davis of the Wake Forest University School of Law , and include the counsels of several prominent multinational companies that operate successfully in the United States .'
operate