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.

Q: Given Relationship: 'be president of', Sentence: 'A month after writing this , he became President of the United States when Richard M. Nixon resigned .'

A: President
****
Q: Given Relationship: 'be son of', Sentence: 'James and John , the sons of Zebedee , had traveled with Jesus for three years and still they wanted to assume positions of leadership that would give them great prestige , satisfy their egos , and give them power over others .'

A: sons
****
Q: Given Relationship: 'be send to', Sentence: 'Barnabas , who had been sent from Jerusalem to superintend the work at Antioch , found it too much for him , and remembering Saul , he set out to Tarsus to seek for him .'

A:
sent
****