Classify each of the following restaurant features as either indoor or outdoor.
Restaurant features: Patio, Dining Room, Atrium, Bar
Indoor: Dining Room, Atrium, Bar
Outdoor: Patio
Complete the following task based on the instruction and optional input provided.### Instruction:
Classify each of the following restaurant features as either indoor or outdoor.

### Input:
Restaurant features: Patio, Dining Room, Atrium, Bar

### Output:
Indoor: Dining Room, Atrium, Bar
Outdoor: Patio