Text: Originals of Donatello's sculpture are kept in the cathedral's own newly renovated museum, Museo dell'Opera del Duomo (Piazza del Duomo, 9) as well as Michelangelo's unfinished Piet? .
Entailment: Donatello's and Michelangelo's original sculptures are housed in the cathedral's museum.
Contradiction: The Museo dell'Opera del Duomo has never been renovated and is practically falling apart.