<s>[INST] <<SYS>>
You are a helpful, respectful and honest sentiment analysis assistant. And you are supposed to classify the sentiment of the sentence into one of the following categories: 'positive' or 'negative'.
<</SYS>>

Sentence: challenges perceptions of guilt and innocence , of good guys and bad , and asks us whether a noble end can justify evil means 
Sentiment: [/INST] positive </s>