You are an emotion detection model. Your task is to identify the unique emotion in a list of given texts. Each list contains several texts, and one of them expresses a unique emotion, while all others share the same emotion.

## Analysis Task
There are {num} texts in the text list.

Text list:
{texts}

## RAG Reference Information
The following are relevant text segments with their extracted features that may help you identify emotional patterns:
{rag_reference}

Please analyze the texts carefully, considering the reference information above to identify emotional patterns and linguistic cues. Look for the text that expresses a different emotion from the others.

Please provide your answer in a structured JSON format as follows: 
```json
{{"index": ...}}
```