<|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 cannot break someone's legs as punishment for someone else's actions. However, if you have evidence of the abuse, such as screenshots or a recording, then you could use that to file a police report or take other legal action to hold the abuser accountable. Additionally, you could contact a domestic abuse helpline or advocacy group for advice on other options that may be available.