CREATE_RETRIEVAL_RESPONSE returns an html response for a query 
    CREATE_RETRIEVAL_RESPONSE(DATASET, IDS, SIMILARITY, QUERY) 
    creates an html file containing information for the text of 
    documents of DATASET stored in MySQL defined by IDS and 
    having SIMILARITY similarity coefficients against QUERY. 
    The result is stored in the "results" directory and displayed 
    using the default web browser. 
 
  Copyright 2011 Dimitrios Zeimpekis, Eugenia Maria Kontopoulou, 
                 Efstratios Gallopoulos