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.
--------
Question: Given Relationship: 'be country in', Sentence: 'Canada and the countries of the Americas are proceeding with Summits and many economic liberalisation negotiations , which , if realised , will transform the political , environmental , social and economic geography of the Western Hemisphere .'

Answer: countries

Question: Given Relationship: 'be region of', Sentence: 'Umbria is the hilly region of central Italy to the east of its more publicized neighbor Tuscany .'

Answer: region

Question: Given Relationship: 'enter', Sentence: 'As America entered into the hostilities of World War II , the requirement for training Navy pilots increased dramatically .'

Answer:
entered