Two examples of palatial townhouses funded by pastel (blue dye) are the Hotel d'Assezat (Place d'Assezat), now home to an art gallery that includes 30 works by Bonnard, and the Hotel de Bernuy (1 Rue Gambetta).
Hotel d'Assezat has an art gallery inside. 
mnli hypothesis: Hotel d'Assezat has an art gallery inside.  premise: Two examples of palatial townhouses funded by pastel (blue dye) are the Hotel d'Assezat (Place d'Assezat), now home to an art gallery that includes 30 works by Bonnard, and the Hotel de Bernuy (1 Rue Gambetta).