This dataset is copied from CLUE with certain modifications.
The paper of CLUE is OCNLI.
The modifications are:
Transform json file to csv file.
Encoding in UTF-8.
Remove data entries whose label value is '-'.
Replace label values, 'neutral' to 1, 'entailment' to 0, and 'contradiction' to 2.
Add one column 'sentence1', whose value is '前提：' + premise value + '结论：' + hypothsis value.
ocnli_train_std.csv comes from train.50k.json.
ocnli_test_std.csv comes from dev.json.
