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: 'be son of', Sentence: 'Our hope is to know God and His son Jesus fully and to be in fellowship with them forever .'
Example Output: son

Example Input: Given Relationship: 'become', Sentence: 'Elected Vice President in 1944 , Truman became President upon Roosevelt 's sudden death in April 1945 and was immediately faced with the problems of winding down the war against the Axis and preparing the nation for postwar adjustment .'
Example Output: became

Example Input: Given Relationship: 'invade', Sentence: 'Pierre Trudeau was 20 when Hitler invaded Poland .'
Example Output:
invaded