The training set of 19 languages is available at this repo: https://github.com/masakhane-io/masakhane-pos
Use this starter notebook to get started: https://github.com/masakhane-io/masakhane-pos/blob/main/train_pos.ipynb
The test set contains 17 parts of speech from Luo and 17 parts of speech from Setswana. Both these languages are unseen in the training set.
You can read more about the dataset and some idea that have worked in the past in this paper (https://arxiv.org/pdf/2305.13989.pdf). However, you are encouraged to come up with your own methods.