The old building with its splendid Salle de Travail (reading room, 1863) is being transformed into a research library of specialist collections for scholars.
The old building has not been changed into a research library.
mnli hypothesis: The old building has not been changed into a research library. premise: The old building with its splendid Salle de Travail (reading room, 1863) is being transformed into a research library of specialist collections for scholars.