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 chose this canister vacuum after reading the reviews.  I have an Oreck for my carpeting and am very happy with it.  But, I don't have accessory tool attachments for cleaning baseboards, bare floors, furniture, and out of the way places.

The suction power on this vac is awesome.  It picks up dirt, lint, and dust with no problem.  I have not found the length of the cord to be a problem.  For a larger home, you will probably have to switch electric outlets.

I rated the vac as a 4.  The crevice attachment was fine, but the combined brush and flat attachment was an odd configuration.  When doing my baseboards, I had to concentrate on keeping the brush end positioned correctly.  It works well, but is different.  Also, the attachments are small in the area they cover.

Another thing that may aggravate some folks is that this canister vac is very light.  I was doing my baseboards and rolling it along but it did tip over a couple of times.

All in all, I am very happy with this vac for what I use it for.  I would not recommend this vac for large carpeted areas.

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


<think>
Answer: B: positive