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# ParTUT — known annotation errors

**Gist.** ParTUT is an automatic conversion from TUT via USD with manual corrections. The last corrections were in 2.5. So alongside the Italian customs there are traces of the conversion: lemmas, labels and features that match neither EWT nor ParTUT itself. The converter does not fix them.

**Examples and numbers.**

- **Pronoun lemmas in lowercase and in the oblique case:** *me* → *i* (9, lowercase), *us* → *us* (28), *them* → *them* (1), *themselves* → *they* (5), *our/ours* → *us* (60 DET + 2 PRON). EWT: *I*, *we*, *they*, *themselves*, *our*.
- **An adjacent noun as `obj`** of the head noun — 15 ([ParTUT — a noun before a noun — nmod, not compound](https://md.mova.elamur.ai/free/en/docs/treebanks/en/partut/seeds/nmod-compound/)): a noun does not take `obj`.
- **Possessive PRON among DET** — 2 of 617: an inconsistency in the custom ([ParTUT — possessives as DET, by without obl:agent, flat:foreign, when as mark](https://md.mova.elamur.ai/free/en/docs/treebanks/en/partut/seeds/structures/)).
- **`Number` on PROPN** — only 82 of 2230: some proper nouns have Number, the rest do not.
- **Passive subject as `nsubj`** (`tb.en.pass-subj`) — 1 of 453.
- **`obl` on a noun without a copula** — 0 of 11. Here ParTUT already agrees with UD 2.18.

**In UD.** For merging, ParTUT's main problem is not errors but customs: `nmod` in compound nouns (862), features without `Case` and `Voice`, possessive DET. The errors (≈ 120) are within the noise.

**Sources.** README `UD_English-ParTUT` (changelog: last corrections — 2.5); rules in [English UD 2.18 treebanks — comparative seed](https://md.mova.elamur.ai/free/en/docs/treebanks/en/seeds-overview/).

- [← previous ParTUT — what these data are and which layers exist](https://md.mova.elamur.ai/free/en/docs/treebanks/en/partut/seeds/data/)
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