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.
Input: Given Relationship: 'be part of', Sentence: 'Antigua and Barbuda are part of the Lesser Antilles with the island of Guadeloupe to the south , Montserrat to the southwest , Saint Kitts and Nevis to the west and Saint Barthemy to the northwest .'
Output:
part