You can do any kind of text mining application using pre-written softwares and tools. However, it is important to understand that the underlying concepts in those tools are also NLP and text mining approaches. Generally tools are very generic - i.e., they can be applied to any domain and the accuracy will not be very good for all the domains. Corpus specificity is one of the important problems with NLP applications. When this is the case, we can fine tune NLP and text mining algorithms according to the corpus in hand so that we get more accurate results which is why most people go in for NLP and text mining algorithms rather than tools when we want corpus specific mining like what is given in the attached pdf.