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

Sentence: at times , the suspense is palpable , but by the end there 's a sense that the crux of the mystery hinges on a technicality that strains credulity and leaves the viewer haunted by the waste of potential .  [/INST]
Sentiment: 