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.

Example Input: Given Relationship: 'invade', Sentence: 'Hitler has invaded Poland .'
Example Output: invaded

Example Input: Given Relationship: 'be son of', Sentence: 'She married Major Arthur William Fitz Roy Somerset , son of Field Marshal FitzRoy James Henry Somerset , 1st Baron Raglan , on 8 July 1845 .'
Example Output: son

Example Input: Given Relationship: 'be part of', Sentence: 'Chernobyl 's number four reactor exploded in April , 1986 , spewing a cloud of radioactive dust over Ukraine , Belarus , Russia and parts of Western Europe .'
Example Output:
parts