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.

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

Output: son


Input: Consider Input: Given Relationship: 'invade', Sentence: 'Poland hopes Russia will invade Ukraine and give L\ 'viv to Poland for their support of invasion , as it has happened a few times in the past .'

Output: invade


Input: Consider Input: Given Relationship: 'come with', Sentence: 'OS X comes with Safari , so we need to start there .'


Output: with