Thanks, these look like exactly what I was looking for. Re NLP, I meant to say NLP from sentiment analysis perspective (not sure if that's the right way to put

Thanks, these look like exactly what I was looking for. Re NLP, I meant to say NLP from sentiment analysis perspective (not sure if that's the right way to put it). So my question was whether you had to extract meaning of one or few related sentences or only process the text in a statistical manner (which you answered).