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 president of', Sentence: 'The United States of America just inaugurated its 44th president , Barack Obama .'
president

Given Relationship: 'say of', Sentence: 'Then Moses said to God , " If I come to the people of Israel and say to them , ` The God of your fathers has sent you , ' and they ask me , ` What is his name ? ' what shall I say to them ? " God said to Moses , " I am who I am . "'
say

Given Relationship: 'be employer in', Sentence: 'Wal-Mart - America 's largest private employer and the world 's largest retailer - publicly released data this week that - for the first time - shows how many women and minorities it employs .'

employer