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: 'present at', Sentence: 'Paper presented at Annual Conflict Research Society Conference , University of Ulster Magee Campus , Northern Ireland , 1-3 September 2004 .'
presented

Given Relationship: 'be cause of', Sentence: 'The founder of Alive and Well Los Angeles has been on many TV shows promoting the fact that HIV is not the cause of AIDS .'
cause

Given Relationship: 'be ally of', Sentence: 'As an ally to Saddam Hussein against Iran in the 1980s , the United States helped Iraq obtain arms , turning a blind eye to products which could be , and were , used for chemical warfare .'

ally