1. A question and answer data editing device for editing the content of a dialogue to generate question and answer data, comprising: a processor configured to function as at least one of a matching unit and a question and answer variation extraction unit, wherein the matching unit detects a first question part or a first answer part from a history data of the content of the dialogue as being similar to a first question and answer data in existing question and answer data; and the question and answer variation extraction unit extracts: a) a second answer part from the history data, when a second question part in the history data is similar to the first question and answer data and the second answer part in the history data is not similar to the first question and answer data, and; b) a third question part from the history data, when a third answer part in the history data is similar to the first question and answer data and the third question part is not similar to the first question and answer data; and registers said third question part or said second answer part from said content of the dialogue as a variation of said first question and answer data in the existing question and answer data.
1. A question and answer data editing device for editing the content of a dialogue to generate question and answer data, comprising: a processor configured to function as at least one of a matching unit and a question and answer variation extraction unit, wherein the matching unit detects a first question part or a first answer part from a history data of the content of the dialogue as being similar to a first question and answer data in existing question and answer data; and the question and answer variation extraction unit extracts: a) a second answer part from the history data, when a second question part in the history data is similar to the first question and answer data and the second answer part in the history data is not similar to the first question and answer data, and; b) a third question part from the history data, when a third answer part in the history data is similar to the first question and answer data and the third question part is not similar to the first question and answer data; and registers said third question part or said second answer part from said content of the dialogue as a variation of said first question and answer data in the existing question and answer data. 2. The question and answer data editing device according to claim 1 , further comprising a question and answer data editing unit that presents said detected first question part or said first answer part in said content of the dialogue or a portion of said first question part and said first answer part so as to be edited in correlation with said existing question and answer data.