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In the Slytherin Common Room, there are several objects and pieces of furniture in a green and silver environment.
In the fireplace, there is an intense fire. In front of the fireplace, there are two sofas. Next to the sofas, there are four tables with chairs. Under the tables and chairs, there are rugs.
On the fireplace, there is the Slytherin emblem.
On the walls, there are lamps and portraits of notable Slytherins.
On the tables, there are chessgames, candles, books, pen nibs, and sheets of paper.
On the sofas, there are pillows and blankets.
The plural of “furniture” is “pieces of furniture”.