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: 'be arrest in', Sentence: 'Selma is a city where Martin Luther King Jr. was arrested on Feb 1 , 1965 , while protesting voter registration regulations .'
[A]: arrested


[Q]: Given Relationship: 'be part of', Sentence: 'So it comes as no surprise that Russia was part of Europe .'
[A]: part


[Q]: Given Relationship: 'be president of', Sentence: 'Congratulations go to Barack Obama on being the first black president of the United States of America .'
[A]:
president