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: 'Turkey 's effort to join the European Union has already been an up and down affair .'

SOLUTION: join

PROBLEM: Given Relationship: 'be city in', Sentence: 'Gardner is a city in Johnson County , Kansas , USA....'

SOLUTION: city

PROBLEM: Given Relationship: 'be city in', Sentence: 'Warsaw is Poland 's capital city , divided by the Vistula River and dominated by the large Royal Castle , a historic cathedral and many modern skyscrapers .'

SOLUTION:
city