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.
One example: Given Relationship: 'make', Sentence: 'Jenny made the announcement that her baby was an alien.'
Solution is here: made
Explanation: 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: Given Relationship: 'be president of', Sentence: 'A sermon occasioned by the death of William Henry Harrison , the late president of the United States , preached on Sunday morning , April 11 , 1841 ... being the Sabbath after the president 's decease , in the Walnut Street Presbyterian Church , Philadelphia , 28pp .'
Solution:
president