conll 2012 shared task 数据集 包括六个文件 conll-2012-development.v4.tar.gz conll-2012-scripts.v3.tar.gz conll-2012-test-key.tar.gz conll-2012-test-official.v9.tar.gz conll-2012-test-supplementary.v9.tar.gz conll-2012-train.v4.tar.gz 地址:https://cemantix.org/conll/2012/data.html