---
title: Ostriches do not bury their heads in the sand: they lie flat to hide… — Ducks, geese and farm myths · tree and pragmatics
description: Ostriches do not bury their heads in the sand: they lie flat to hide and turn their eggs in a nest dug in the ground, which from far away can look like heads in the sand. Who acts: Ostriches, nest. A sentence of the lesson «Ducks, geese and farm myths» of the biology course of Mova's primary school 
---

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# Ducks, geese and farm myths, sentence 13

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Ostriches do not bury their heads in the sand: they lie flat to hide and turn their eggs in a nest dug in the ground, which from far away can look like heads in the sand.

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**Who acts:** Ostriches, nest · **What happens:** not bury, lie, hide, turn, dig, look · **To what, where:** heads, sand, eggs, nest, ground

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This is a sentence of the lesson «Ducks, geese and farm myths» 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 (Ostriches, nest), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:213-ducks-geese-and-farm-myths.lesson:13
# text = Ostriches do not bury their heads in the sand: they lie flat to hide and turn their eggs in a nest dug in the ground, which from far away can look like heads in the sand.
# source = school lesson (ours)
# course = biology
# lesson = 213-ducks-geese-and-farm-myths.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, R7-rel-agree ×1
1	Ostriches	ostrich	NOUN	NNS	Number=Plur	4	nsubj	_	_
2	do	do	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	aux	_	_
3	not	not	PART	RB	Polarity=Neg	4	advmod	_	_
4	bury	bury	VERB	VB	VerbForm=Inf	0	root	_	_
5	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	6	nmod:poss	_	_
6	heads	head	NOUN	NNS	Number=Plur	4	obj	_	_
7	in	in	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	sand	sand	NOUN	NN	Number=Sing	4	obl	_	_
10	:	:	PUNCT	:	_	12	punct	_	_
11	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	12	nsubj	_	_
12	lie	lie	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	parataxis	_	Agree=R7-rel-agree|Haiku=4:conj
13	flat	flat	ADJ	JJ	Degree=Pos	12	xcomp	_	_
14	to	to	PART	TO	_	15	mark	_	_
15	hide	hide	VERB	VB	VerbForm=Inf	12	advcl	_	Agree=R5-strong|Haiku=13:xcomp
16	and	and	CCONJ	CC	_	17	cc	_	_
17	turn	turn	VERB	VB	VerbForm=Inf	15	conj	_	_
18	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	19	nmod:poss	_	_
19	eggs	egg	NOUN	NNS	Number=Plur	17	obj	_	_
20	in	in	ADP	IN	_	22	case	_	_
21	a	a	DET	DT	Definite=Ind|PronType=Art	22	det	_	_
22	nest	nest	NOUN	NN	Number=Sing	17	obl	_	_
23	dug	dig	VERB	VBN	Tense=Past|VerbForm=Part	22	acl	_	_
24	in	in	ADP	IN	_	26	case	_	_
25	the	the	DET	DT	Definite=Def|PronType=Art	26	det	_	_
26	ground	ground	NOUN	NN	Number=Sing	23	obl	_	_
27	,	,	PUNCT	,	_	33	punct	_	_
28	which	which	PRON	WDT	PronType=Rel	33	nsubj	_	_
29	from	from	ADP	IN	_	30	case	_	_
30	far	far	ADV	RB	Degree=Pos	33	advmod	_	_
31	away	away	ADV	RB	_	30	advmod	_	_
32	can	can	AUX	MD	VerbForm=Fin	33	aux	_	_
33	look	look	VERB	VB	VerbForm=Inf	22	acl:relcl	_	_
34	like	like	ADP	IN	_	35	case	_	_
35	heads	head	NOUN	NNS	Number=Plur	33	obl	_	_
36	in	in	ADP	IN	_	38	case	_	_
37	the	the	DET	DT	Definite=Def|PronType=Art	38	det	_	_
38	sand	sand	NOUN	NN	Number=Sing	33	obl	_	_
39	.	.	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- 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 | **not** **bury** | present · do-support | Ostriches | ostriches's heads |  | the sand |  |  | vn put-9.1-1 «NP V NP PP.destination»: agent=Agent head=Theme in sand=Destination |
| 2 | **lie** | present | ostriches *= ostrich* |  |  |  |  | flat *property* | vn assuming\_position-50 «NP V»: agent=Agent |
| 3 | **hide** | to-infinitive | ostriches *= ostrich* *not said here* |  |  |  |  |  | vn concealment-16-1 «NP V»: agent=Agent |
| 4 | **turn** | infinitive | ostriches *= ostrich* *not said here* | ostriches's eggs |  |  |  | in a nest | vn crane-40.3.2 «NP V NP PP.recipient PP.theme»: agent=Agent egg=Patient in nest=Topic |
| 5 | **dig** | participle |  | a nest *not said here* |  | the ground |  |  | vn hunt-35.1 «NP V PP.theme PP.location»: agent=Agent in ground=Location |
| 6 | **look** | can | a nest |  |  |  |  | like heads; in the sand; far *property* | vn peer-30.3 «NP V PP.theme»: agent=Agent in sand=Theme |

<!-- .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:213-ducks-geese-and-farm-myths.lesson:13`.

**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, R7-rel-agree ×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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