Question:  "A Subtlety" is a piece of installation art by an artist currently serving a five-year term as Tepper Chair at what university?
Sentence (from "Kara Walker"): Kara Elizabeth Walker (born November 26, 1969) is an African American contemporary painter, silhouettist, print-maker, installation artist, and film-maker who explores race, gender, sexuality, violence, and identity in her work.
Relevant evidence: No