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: 'invade', Sentence: 'After the United States invaded Grenada in 1983 , the communist junta of Hudson Austin and Bernard Gourd was replaced by a government that allowed a free press and opposition parties to flourish .'
invaded

Given Relationship: 'stand for', Sentence: 'MMA stands for Mixed Martial Arts and it is a system in which all types of fighting styles are used to see , which one is best .'
stands

Given Relationship: 'be island of', Sentence: 'Puerto Rico is the easternmost island of the Greater Antilles .'
island