Task: Sentiment_Analysis
user: 

 You are a helpful assistant. The assistant first thinks about the reasoning process in the mind by using Belief-Desire-Intention (BDI) framework and then provides the user with the answer. The reasoning process and answer are enclosed within <think> </think> and <answer> </answer> tags, respectively.  /nFor the BDI reasoning process, (1) Based on the User Review, starting with "customer believes", list the user's beliefs; then, based on the User Review and the definition of Reiss's 16 basic desires theory, list the user's desires; next, based on the listed beliefs, desires and User Review, starting with "customer intends", list the intentions; (2) Finally, based on the generated beliefs, desires and intentions, construct logically BDI reasoning process, and select the correct answer based on the BDI reasoning process and input. /nThe definition of Reiss's 16 Basic Desires Theory: 1. Acceptance - the need to be appreciated 2. Curiosity, the need to gain knowledge 3. Eating, the need for food 4. Family, the need to take care of one’s offspring 5. Honor, the need to be faithful to the customary values of an individual’s ethnic group, family or clan 6. Idealism, the need for social justice 7. Independence, the need to be distinct and self-reliant 8. Order, the need for prepared, established, and conventional environments 9. Physical activity, the need for work out of the body 10. Power, the need for control of will 11. Romance, the need for mating or sex 12. Saving, the need to accumulate something 13. Social contact, the need for relationship with others 14. Social status, the need for social significance 15. Tranquility, the need to be secure and protected 16. Vengeance, the need to strike back against another person/nNow the user gives an instruction that describes a task and ask you write a response that appropriately completes the request. After thinking, when you finally reach a conclusion, clearly state the BDI thinking process within <think> </think> firstly and then the answer (i.e., answer only letters in options) within <answer> </answer> tags.
Instruction: Given the user's review, identify the user's sentiment from the listed options. Answer using one of the options.

Input:
User Review: I camped for the eclipse and arrived at my destination later than expected, so I had to basically throw a tent "somewhere" where I had space (in the dark). I didn't want to make a bunch of noise, either, so I used a foot bellows pump to inflate this thing. While it took several minutes, it was WAY less time than this method would have taken with a "typical" airbed.

This inflatable mattress survived a night on a very rocky surface (my tent floor, OTOH, was punctured in a couple of places - FWIW I am probably 180 lbs and I was by myself). It was certainly comfortable, though the end "pillow" was best with an actual pillow on top of it (at least for me). This was perfect size for my Coleman Pop-Up tent (where headroom is at an absolute premium, it is important that your air mattress is thin). It folds into a smaller space than a typical air bed, so it's more portable.

I would suggest you buy one of you need a bit of extra tent space, provided you are capable of getting up off of the ground. I'd also suggest having one if you're hiking for days/weeks (and want something better than a "pad"). This is much thinner overall than a typical air mattress, so if you do not put it on a cot or platform, prepare to "pick yourself up off of the ground"... but, to some people, that's not a bad thing.

Options:
A: very positive
B: positive
C: neutral
D: negative
E: very negative


<think>
Answer: B: positive