<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: as an introduction to the man 's theories and influence , derrida is all but useless ; as a portrait of the artist as an endlessly inquisitive old man , however , it 's invaluable 
Sentiment: [/INST] positive </s>