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.

Given Relationship: 'be name of', Sentence: 'In the name of Jesus Christ my Lord I pray .'
name

Given Relationship: 'be son of', Sentence: 'Mary Tyler married James Baldwin , son of John Baldwin and Hester Larkin , 20 January 1714/15 St Barnebas Church , Queen Anne Parish , Prince George 's Co , MD.'
son

Given Relationship: 'keep', Sentence: 'Obama is trying to keep his BlackBerry .'

keep