In this task, you're given a review from Amazon's food products. Your task is to generate a rating for the product on a scale of 1-5 based on the review. The rating means 1: extremely poor, 2: poor, 3: neutral or mixed, 4: good, 5: extremely good. 

Ex Input:
Very difficult to work with - tends to turn to solid rock even when following directions - taste is less than desirable

Ex Output:
2


Ex Input:
I just called Bob's Red Mill customer service (just do a G search for the company, their customer service number is under "contact us" on their site), and I was annoyed to learn that NONE OF BOB'S RED MILL BAKING SODA CONTAINS ALUMINUM. I've been paying $10-15 (with shipping) for this magical 'aluminum free' baking soda only to learn that the Bob's Red Mill 'premium baking soda' at my local grocery is the same exact thing. Call for yourself if you don't believe me. Ugh.

Ex Output:
1


Ex Input:
This is actually better than I expected when I paid less than 50 cents each.  We usually use a packet mix and hot water from the brewer.  This is much easier and the taste is comparable.  If you are very particular you may not like this but for something quick, sweet, chocolate flavored and warm for around 50 cents it is worth a try.  I would not buy it at the regular price that some retailers ask.

Ex Output:

4