---
title: Real ostriches never do this: a bird with its head under sand could… — Myth check: do ostriches bury their heads in the… · tree and pragmatics
description: Real ostriches never do this: a bird with its head under sand could not breathe, and it would be easy prey for a lion. Who acts: Real ostriches, bird, ostrich. A sentence of the lesson «Myth check: do ostriches bury their heads in the sand?» of the biology course of Mova's primary school with its de
---

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# Myth check: do ostriches bury their heads in the sand?, sentence 1

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Real ostriches never do this: a bird with its head under sand could not breathe, and it would be easy prey for a lion.

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**Who acts:** Real ostriches, bird, ostrich · **What happens:** not do, not breathe, be · **To what, where:** this, easy prey

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This is a sentence of the lesson «Myth check: do ostriches bury their heads in the sand?» of the biology 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 (Real ostriches, bird, ostrich), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:151-ostriches-and-heads-in-the-sand.lesson:1
# text = Real ostriches never do this: a bird with its head under sand could not breathe, and it would be easy prey for a lion.
# source = school lesson (ours)
# course = biology
# lesson = 151-ostriches-and-heads-in-the-sand.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): R5-strong ×1
1	Real	real	ADJ	JJ	Degree=Pos	2	amod	_	_
2	ostriches	ostrich	NOUN	NNS	Number=Plur	4	nsubj	_	_
3	never	never	ADV	RB	PronType=Neg	4	advmod	_	_
4	do	do	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	this	this	PRON	DT	Number=Sing|PronType=Dem	4	obj	_	_
6	:	:	PUNCT	:	_	8	punct	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
8	bird	bird	NOUN	NN	Number=Sing	5	appos	_	_
9	with	with	ADP	IN	_	11	case	_	_
10	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	11	nmod:poss	_	_
11	head	head	NOUN	NN	Number=Sing	8	nmod	_	_
12	under	under	ADP	IN	_	13	case	_	_
13	sand	sand	NOUN	NN	Number=Sing	11	nmod	_	Agree=R5-strong|Haiku=16:obl
14	could	could	AUX	MD	VerbForm=Fin	16	aux	_	_
15	not	not	PART	RB	Polarity=Neg	16	advmod	_	_
16	breathe	breathe	VERB	VB	VerbForm=Inf	8	acl:relcl	_	_
17	,	,	PUNCT	,	_	23	punct	_	_
18	and	and	CCONJ	CC	_	23	cc	_	_
19	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	23	nsubj	_	_
20	would	would	AUX	MD	VerbForm=Fin	23	aux	_	_
21	be	be	AUX	VB	VerbForm=Inf	23	cop	_	_
22	easy	easy	ADJ	JJ	Degree=Pos	23	amod	_	_
23	prey	prey	NOUN	NN	Number=Sing	4	obl	_	_
24	for	for	ADP	IN	_	26	case	_	_
25	a	a	DET	DT	Definite=Ind|PronType=Art	26	det	_	_
26	lion	lion	NOUN	NN	Number=Sing	23	nmod	_	_
27	.	.	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

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No stored speech act for this sentence.

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **do** | present | Real ostriches | this |  |  |  |  | vn act-114-1 «NP V NP»: agent=Agent this=Eventuality |
| 2 | **not** **breathe** | could | a bird with ostrich's head under sand *not said here* |  |  |  |  |  | vn breathe-40.1.2-1 «NP V»: agent=Agent |
| 3 | **is a** | would | ostrich | easy prey |  |  |  | for a lion | tree rules |

<!-- .note -->
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:biology:151-ostriches-and-heads-in-the-sand.lesson:1`.

**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): R5-strong ×1. **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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