Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
your purchase and use of third-party content may be subject to additional terms , including , but not limited to , third-party end-user agreements , and privacy policies . 

```
. OPTIONS: ['Choice of law' 'Content removal' 'Contract by using'
 'Limitation of liability' 'Unilateral change' 'Arbitration'
 'Jurisdiction' 'None' 'Unilateral termination'].