Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
in order to initiate arbitration , a claim must be filed with the aaa and the written demand for arbitration ( available at www.adr.org ) provided to the other party , as specified in the aaa rules . 

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