@techreport{weko_48901_1, author = "中岩,浩巳", title = "日英対訳コーパス中のゼロ代名詞とその指示対象の自動認定", year = "1998", institution = "NTTコミュニケーション科学研究所", number = "1(1997-NL-123)", month = "jan" }