Some of the annotations in the class and pos configs are not properly formed. These are indicated with warning messages when the dataset is loaded.
In addition to the classes mentioned in the README for the dataset, there is an additional class in the class dataset called QUOT. As far as I can tell, this is used for tagging all quotation marks
When the class and pos configs are loaded, the available class/pos tags are shown at the top… See the full description on the dataset page:
https://huggingface.co/datasets/biglam/clmet_3_1.