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.

[Q]: Given Relationship: 'join', Sentence: 'Turkey 's effort to join the European Union has already been an up and down affair .'
[A]: join

[Q]: Given Relationship: 'land on', Sentence: 'Huygens - landed on Titan , Saturn 's largest moon , in January 2005 .'
[A]: landed

[Q]: Given Relationship: 'present at', Sentence: 'Paper presented at the Western Psychological Association Annual Meeting , San Francisco , California .'
[A]:
presented