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: 'be suburb of', Sentence: 'Originally from the Maryland suburbs of Washington DC and the daughter of a US Navy Captain , Katrina has lived abroad but moved with her husband nine years ago upon his transfer to the Naval Air Station Key West .'
suburbs

Given Relationship: 'be part of', Sentence: 'Finland was part of the Russian Empire until the end of WW I. i .e .1917 .'
part

Given Relationship: 'be island in', Sentence: 'Residents of the Caribbean island of Montserrat call one of their edible frog species mountain chicken , but this amphibian is now endangered .'

island