TASK DEFINITION: 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.
PROBLEM: Given Relationship: 'join', Sentence: 'Why did Denmark join the European Union in 1973 ?'

SOLUTION: join

PROBLEM: Given Relationship: 'declare war on', Sentence: 'When the United States declared war on Germany on April 6 , 1917 , Hemingway tried to enlist in the army .'

SOLUTION: declared

PROBLEM: Given Relationship: 'lead', Sentence: 'A Time Magazine poll on Wednesday saw Obama leading McCain by 17 points with women , 55 percent to 38 percent .'

SOLUTION:
leading