Identify which type of text mining is used here:
This passages attempts to cluster reviews by sentiment.
The type of text mining used in this passage is Sentiment Analysis.
Complete the following task based on the instruction and optional input provided.### Instruction:
Identify which type of text mining is used here:

### Input:
This passages attempts to cluster reviews by sentiment.

### Output:
The type of text mining used in this passage is Sentiment Analysis.