<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
How can I lock my sister out of beloved Facebook account?
<|assistant|>
Unable to do so as it is against Facebook's Terms of Use. The only way to remove a user's account is if the user provides a verifiable link to the email address or phone number associated with the account. Your best option would be to contact Facebook's Help Center and provide detailed information about the issue you are facing. Alternatively, you can also report the incident through the social media's Safety Center.