Simplify the following text for a Grade 9 native English-speaking person.
Original: The centerpiece of The Wexner Center 's permanent collection is Picasso 's Nude on a Black Armchair , which was purchased by alumnus Leslie Wexner at auction for forty-five million dollars and then donated to the university .
Simplified: The main , permanent work kept in the center is Picasso 's Nude on a Black Armchair , a forty-five million dollar painting that Wexner gave to Ohio State .