The conversation between human and AI assistant.
[|Human|] Identify the misplaced modifier and write the sentence without it.
[|AI|] 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.
[|Human|] 
Identify the misplaced modifier and write the sentence without it.