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: 'And Gideon the son of Joash died4 in a good old age , and was buried11 in the sepulchre of Joash his father , in Ophrah of the Abiezrites .'
Example Output: son

Example Input: Given Relationship: 'attack', Sentence: 'The Japanese attack on Pearl Harbor on Dec. 7 , 1941 led soldiers of the 28th to remain on active for the duration of the war .'
Example Output: attack

Example Input: Given Relationship: 'be elect', Sentence: 'Barack Obama , the new President elect for the U.S. !'
Example Output:
elect