Data filtering from normal English text

Here is the scenerior: We send out survey forms to our users. Most of the questions are objective(Yes/NO). However, we have one field called Other Comments where people can type their comments. We need to analyze this with best results. If you have developed a similar solutions, I would be interested in doing business with you for this. ## Deliverables Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. Complete copyrights to all work purchased.