UD for Avestan 
Tokenization and Word Segmentation
- Words are generally delimited by whitespace and punctuation (a dot at the end of each word). Exceptions:
- The conjunction ‘-ca’ is a clitic attached to the previous word.
- Sometimes there are also dots in the middle of a word.
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Morphology
Tags
- Avestan does not use the AUX, DET, PUNCT, X and SYM UPOS tags. Currently interjections and numerals are not present in the treebank yet, as this is a small treebank.
Features
- Nouns (NOUN) and proper names (PROPN) inflect for Case and Number. They also have a particular Gender.
- Adjectives (ADJ) inflect for Case, Gender and Number. In addition, many adjectives inflect for Degree (positive, comparative, superlative).
- Adverbs inflect only for Degree.
- Verbs can be finite or infinite (reflected in VerbForm), as well as participles and verbal nouns. Finite forms inflect for Tense, Mood, Aspect, Person, Number and Voice. Infinitives inflect for Tense, Aspect and Voice. Participles inflect for Tense, Aspect, Voice, Case, Gender and Number. Verbal nouns inflect for Case, Gender and Number.
- The type of pronoun is reflected in PronType. Personal and possessive pronouns are inflected for Case, Gender and Number, as well as marked by Person. Demonstrative, interogative, relative and indefinite pronouns are inflected for Case, Gender and Number. Articles are definite or indefinite (Definite). Personal and reflexive pronouns are inflected for Number, Case (nominative or accusative/oblique) and Person; possessive pronouns for Number and Person.
Syntax
- Subjects have the following characteristics:
- Case marking: Subjects occur in nominative case without adpositions.
- Objects have the following characteristics:
- Case marking: Objects occur in the accusative case without adpositions.
- Indirect objects have the following characteristics:
- Case marking: Objects occur in the dative case without adpositions.
Relations Overview
- The following relation subtypes can be used in Avestan:
- acl:relcl for adnominal relative clause modifiers.
Treebanks
There is one Avestan UD treebank: