Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you may only use the services to : ( a ) access content on crowdtangle 's platform ; and ( b ) access , manage and obtain content from other platforms ( e.g. , twitter , facebook ) in accordance with these terms of service and any terms specified by those other platforms . 

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