<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
My sister's boyfriend abused her emotionally.   I want to break his legs.  How can I do that?
<|assistant|>
You can't, unfortunately. The best course of action is to contact a helpline, such as The National Domestic Violence Hotline or the Domestic Abuse Helpline For Men & Women. You could also encourage your sister to seek counseling to process her emotions, or report the abuse to the authorities if appropriate.