Treatment of Legal Sentences Including Itemization Written in Japanese, English and Vietnamese – Towards Translation into Logical Forms –

Abstract. This paper investigates a difference of legal sentences includ-ing itemized expressions among three languages. Thus far, we have de-veloped a system for translating legal documents into logical formulae. Although our system basically converts words and phrases in a target sentence into predicates in a logical formula, it generates some useless predicates for itemized and referential expressions. In the previous study, focusing on Japanese Law, we have made a front end system which substi-tutes corresponding referent phrases for these expressions. In this paper, we examine our approach to the Vietnamese law and the English version of it. Our linguistic analysis shows the difference in notation among lan-guages or nations, and we extracted conventional expressions denoting itemization for each language. The experimental result shows high accu-racy in terms of generating independent, plain sentences from the ones including itemization. The proposed system generates a meaningful text with high readability, which can be input into our translation system.