Misplaced Modifier: None. The sentence is correctly structured- "sitting on the window" accurately describes the position of the cat. 
Revised Sentence: The cat was frightened by the thunder.
The cat sitting on the window was frightened by the thunder.
### Instruction:
Identify the misplaced modifier and write the sentence without it.

### Input:
The cat sitting on the window was frightened by the thunder.

### Response:
