Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Given Relationship: 'make', Sentence: 'Jenny made the announcement that her baby was an alien.'
Solution: made
Reason: The output relationship - made, is a correct verb form of the given relationship - make, and it is also used in the given sentence

Now, solve this instance: Given Relationship: 'be president of', Sentence: 'Richard Milhous Nixon , the thirty-seventh President of the United States became President in 1969 after defeating Lyndon Johnson 's Vice-President , Hubert Humphrey , in one of the closest elections in US history .'
Student:
President