Complete the following sentence:

The sunset was so __________, it looked like the sky was on fire.
The sunset was so stunning, it looked like the sky was on fire.
Complete the following task based on the instruction and optional input provided.### Instruction:
Complete the following sentence:

The sunset was so __________, it looked like the sky was on fire.

### Output:
The sunset was so stunning, it looked like the sky was on fire.