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? Solve this instance: Given Relationship: 'be chair by', Sentence: 'The Wilbur Cross Medals will be presented by Yale President Richard C. Levin , Graduate School Dean Jon Butler and Anna Marsh , chair of the Graduate School Alumni Association Executive Committee , at a gala private dinner at the Yale Center for British Art .'
Student:
chair