1. A method for retrieving based on a search term together with its corresponding meaning from a set of base documents those documents which contain said search term and in which said search term has said corresponding meaning, said method comprising: searching, utilizing a computer, for those base documents among said set of base documents which contain said search term; evaluating, utilizing the computer, the found base documents as to whether said search term contained in said found base documents has said corresponding meaning, said evaluation comprising: generating, utilizing the computer, a text document to represent elements surrounding the search term and the elements' corresponding relative position with respect to said search term, said elements' relative position with respect to said search term comprising where the elements are located in the surrounding area of the search term, as compared with where the search term is located; inputting, utilizing the computer, said text document into a trainable classifying apparatus which has been trained to recognize whether said search term in each said found base document has said corresponding meaning, whereas said training has been performed based on a training sample of said found base documents which have been generated for documents in which the search term surrounded by the surrounding elements has said corresponding meaning inputted by said user; and classifying, utilizing the computer, each said found base document to judge whether said search term in each said found based document has said corresponding meaning; generating a database from the elements and their corresponding meaning.