instruction:
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.
question:
Given Relationship: 'be son of', Sentence: 'Peter is called son of John in John 21:15 and Barjona in Matt 16 :17 .'
answer:
son


question:
Given Relationship: 'invade', Sentence: 'In 2003 , the United States , under President Bush , invaded Iraq to change the regime .'
answer:
invaded


question:
Given Relationship: 'acquire', Sentence: 'San Diego-based Websense said Tuesday that it has acquired Defensio , a provider of technology for dealing with spam on social networking and Web 2.0 web sites .'
answer:

acquired