Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
any software that is made available to download from the tripadvisor websites ( `` software '' ) is the copyrighted work of tripadvisor , or tripadvisor affiliates , or other third party software as identified . 

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