On a scale of 1-5 (with 1 being least favorable and 5 being most favorable), how would you rate this review? "Good free app opening all formats I like it. Being open source is another big advantage."
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Answer: 5

On a scale of 1-5 (with 1 being least favorable and 5 being most favorable), how would you rate this review? "nice app i like it.."
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Answer: 5

On a scale of 1-5 (with 1 being least favorable and 5 being most favorable), how would you rate this review? "It is very useful It is very useful"
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Answer:
5