---
title: Ostriches and emus are birds that cannot fly. — Classifying unusual animals · tree and pragmatics
description: Ostriches and emus are birds that cannot fly. Who acts: Ostriches, birds. A sentence of the lesson «Classifying unusual animals» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Classifying unusual animals, sentence 9

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Ostriches and emus are birds that cannot fly.

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**Who acts:** Ostriches, birds · **What happens:** be, not fly · **To what, where:** birds

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This is a sentence of the lesson «Classifying unusual animals» of the world course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (Ostriches, birds), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:029-classifying-unusual-animals.lesson:9
# text = Ostriches and emus are birds that cannot fly.
# source = school lesson (ours)
# course = world
# lesson = 029-classifying-unusual-animals.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): no change
1	Ostriches	ostrich	NOUN	NNS	Number=Plur	5	nsubj	_	_
2	and	and	CCONJ	CC	_	3	cc	_	_
3	emus	emu	NOUN	NNS	Number=Plur	1	conj	_	_
4	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
5	birds	bird	NOUN	NNS	Number=Plur	0	root	_	_
6	that	that	PRON	WDT	PronType=Rel	9	nsubj	_	_
7	can	can	AUX	MD	VerbForm=Fin	9	aux	_	_
8	not	not	PART	RB	Polarity=Neg	9	advmod	_	_
9	fly	fly	VERB	VB	VerbForm=Inf	5	acl:relcl	_	_
10	.	.	PUNCT	.	_	5	punct	_	_
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | Ostriches and emus | birds |  |  |  |  | tree rules |
| 2 | **not** **fly** | can | birds |  |  |  |  |  | vn spatial\_configuration-47.6-1 «NP V»: agent=Theme |

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One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:world:029-classifying-unusual-animals.lesson:9`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): no change. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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