<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Sentence: an invaluable historical document thanks to the filmmaker 's extraordinary access to massoud , whose charm , cultivation and devotion to his people are readily apparent . 
Sentiment: [/INST] positive </s>