PROBLEM TO BE SOLVED: To create a generation technique for a third language text used in machine translation not only between the main languages but also between the main language and non-main language, and to provide a generation technique capable of generating a text with higher accuracy than before. SOLUTION: A language text having multi-parallel translation relationships is input, and a bilingual corpus of both languages is used to realize a technique for generating a third language text with higher accuracy than the conventional single-language input. After input, a target language document is output through the respective processes of an analysis process, a conversion process, and a generation process. The target language document is characterized in that since inherent information can be automatically obtained, a large corpus is not needed.
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