Task: Sentiment_Analysis

system
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. 
Below is an instruction that describes a task. After thinking, when you finally reach a conclusion based on the customer's intention, desire and belief, clearly state the BDI thinking process within <think> </think> and then the answer within <answer> </answer> tags.


user 
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've been using ereaders since 2009 and have owned multiple Sony's from the PRS-550 up to the T-1 as well as Kindle 2, Keyboard and touch and an iPad.  All of these have their strong points but so far my favorite brand has been the Sony, even though you can't beat the Kindle for ease of buying books.  However, most of my book purchases are not through the Kindle site and I side load to the readers using Calibre software.

I'd never been tempted by a Nook but when the Glowlight came out I thought how wonderful it would be for reading in bed.  That's the main reason I bought the iPad but I don't like really like the Nook or Kindle Apps for Ipad and side loading books to the iBook app  is cumbersome as they have to go through iTunes.  Also, I don't want to carry the iPad around in my purse on a daily basis so if I want to keep with the same book I had to have it loaded to 2 readers.

Anyway, I've been using the Nook with Glowlight for the last month and I'm pretty satisfied with it.  The Glowlight is just wonderful for reading in bed or in other low light conditions.  I was waiting outside for a table at a restaurant while on vacation and it started getting dark, I just put on the glowlight and kept on reading.  The reader is small enough to carry easily and I really like the buttons for page forward and back, even though I've found the touch screen to be very responsive.  The menus are pretty user friendly and I haven't had any trouble getting where I want to.

Pros:
* Glowlight - Love this feature!
* Page Buttons
* Size
* Navigation

Cons:
* Screen fragility - I keep my cover closed when not using and haven't had any problems with this but I know the screen is easly damaged due to the glowlight.
* Space for non-Nook books - It seems that most of the space on the device itself is reserved for Nook books.  I like to keep a large portion of my library on a reader so I always have plenty of options.  I tried to load about 1300 books and ran out of space quickly so if you want a lot of non-Nook books you will need to use a mini SD card.
* Bookshelves - The great thing about the Sony readers are the Collections which are so easily transfered from Calibre.  Apparently you can set bookshelves on the Nook but they don't work well when using an SD card.  I'm also not fond of the Kindle's process for setting Collections.
* Navigation - Yes this is also a Pro except in the case of locating a book in your reading list.  There are currently 341 pages on my memory card and no way to page through them quickly that I've found.  You can search for a particular title or author but there's no quick way to browse that list that I've found.  Of course many people don't choose to keep so many books loaded on their reader so it wouldn't be an issue in that case.

Overall I'm very pleased with this ereader.  Having the Glowlight feature really makes up for any other shortcomings for me.  If you like to read in bed with the lights off this is the reader for you.

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


assistant
Answer: B: positive