Text-Fabric data is a collection of richly annotated data sources. They are stored in a compact, plain text format .tf.
Fully developed TF data sources can be found here: corpora
Here you find a few data sources developed as a pilot project.
See the docs.
In order to work with them, you need Text-Fabric which is a Python package that you can easily install.
The data is based on sources which are the work of various other people.