6. The system according to claim 3 , wherein said polarity classifier determines said complimentary/critical polarity of each of said evaluating sentences on the related product features by using a sentiment analysis technique.
3. The system of claim according to claim 1 , wherein the support determining instruction comprises: a polarity classifier configured to determine complimentary/critical polarity of each of said evaluating sentences on said related product features and complimentary/critical polarity of each of said feedbacks on said related product features; wherein said support determining instruction determines whether said evaluating sentences are supported by said associated feedbacks by evaluating said complimentary/critical polarity of said evaluating sentence and said complimentary/critical polarity of said feedback.