Make some reference corpora available

[jmccrae]

At least most of the small open-source corpora should be available on https://teanga.io/

This includes at least:

• Gutenberg
• Brown
• CESS
• Chat-80
• CoNLL 2000, 2002, 2007
• All of UD?
• FrameNet corpus
• Genesis
• Inaugural Addresses
• MacMorpho (if not in UD)
• Movie Reviews
• NIST 1999
• NPS Chat
• Question Classification
• Reuters
• Roget's Thesaurus
• RTE Textual Entailment
• SEMCOR
• SenseEval
• SentiWordNet
• Shakespeare
• Switchboard
• UDHR
• Penn Treebank

[jmccrae]

Corpora collected at https://github.com/TeangaNLP/teanganlp.github.io/tree/main/corpora

They are published at teanga.io, e.g., https://teanga.io/corpora/abc.yaml.gz