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 good price and we love our keurig trying the summer flavors are great and will probably order more before the end of the summer.

Ex Output:
4


Ex Input:
Dried mangoes are my hubby's favorite fruit.  He especially LOVES the Philippine brand.  Some come close, but no cigar.  We have searched high & low to find a brand comparative to these, but there are none.  Having them delivered on a regular basis is great & with free shipping.  No more detective work and disappointment.  He does have to be careful however, because he seems to eat them too fast & runs out short of the next delivery, maybe I will increase my quantity!  Quality is the best.  Delivery on a regular basis was a perfect gift for him.  I am very happy & satisfied.

Ex Output:
5


Ex Input:
I sent two Babkas to a friend as a thank you.  He is a big Seinfeld fan so he was thrilled to get both a cinnamon and chocolate babka.  He said the babkas were delicious!!!

Ex Output:

5