As information is both the source and the product of all legal work, legal practitioners are crucially dependent on good access to legal information. The legal databases that are currently available to store and retrieve statutes, judicial decisions, and legal literature, however, often pose problems to the users with the effect that they cannot find the information they need. To a large extent, these problems can be attributed to the limitations of the traditional Boolean query mechanism used in text databases which is difficult for users to operate. As a possible solution for these...