<p>A confirmation link edition unit (42) receives a confirmation link specified by a user. A paragraph correlation unit (43) divides an English text and a Japanese text into a plurality of paragraphs according to the confirmation link. A segment correlation calculator (44) correlates an English segment and a Japanese segment for each paragraph. A correlation edition unit (45) represents to a user the correlation obtained by the segment correlation calculator (44) and edits the correlation according to a correction instruction from the user if any.</p>
