input: Please answer the following: On a scale of 1-5 (with 1 being least favorable and 5 being most favorable), how would you rate this review? "Rev Wonderful app"
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output: 5

input: Please answer the following: On a scale of 1-5 (with 1 being least favorable and 5 being most favorable), how would you rate this review? "not working for xperia z it gave me error 18..."
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output: 2

input: Please answer the following: On a scale of 1-5 (with 1 being least favorable and 5 being most favorable), how would you rate this review? "Honesty it's great but there's one problem. I can't set it as my lock screen. If you can add this feature in I'll give you 5 stars no doubt. Other than that it's really great."
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output: 4

input: Please answer the following: On a scale of 1-5 (with 1 being least favorable and 5 being most favorable), how would you rate this review? "Nice Good play service"
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output:
4