---
title: Ostriches do not bury their heads in sand; they lower their heads to… — Defences: tricks and myths: playing dead, droppi… · tree and pragmatics
description: Ostriches do not bury their heads in sand; they lower their heads to turn eggs in their ground nest or lie flat to hide, and an ostrich can run at about 70 kilometres an hour and kick hard enough to hurt a lion. Who acts: Ostriches, ostrich. A sentence of the lesson «Defences: tricks and myths: play
---

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# Defences: tricks and myths: playing dead, dropping tails, ink, and do ostriches bury their heads?, sentence 5

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Ostriches do not bury their heads in sand; they lower their heads to turn eggs in their ground nest or lie flat to hide, and an ostrich can run at about 70 kilometres an hour and kick hard enough to hurt a lion.

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**Who acts:** Ostriches, ostrich · **What happens:** not bury, lower, turn, lie, hide, run · **To what, where:** heads, sand, eggs, 70 kilometres, lion

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This is a sentence of the lesson «Defences: tricks and myths: playing dead, dropping tails, ink, and do ostriches bury their heads?» 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, ostrich), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:249-defences-tricks-and-myths-playing-dead-dropping-tails-ink-and-ostriches.lesson:5
# text = Ostriches do not bury their heads in sand; they lower their heads to turn eggs in their ground nest or lie flat to hide, and an ostrich can run at about 70 kilometres an hour and kick hard enough to hurt a lion.
# source = school lesson (ours)
# course = biology
# lesson = 249-defences-tricks-and-myths-playing-dead-dropping-tails-ink-and-ostriches.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 ×2
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	_	8	case	_	_
8	sand	sand	NOUN	NN	Number=Sing	4	obl	_	_
9	;	;	PUNCT	,	_	11	punct	_	_
10	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	11	nsubj	_	_
11	lower	lower	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	parataxis	_	Agree=R7-rel-agree|Haiku=4:advcl
12	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	13	nmod:poss	_	_
13	heads	head	NOUN	NNS	Number=Plur	11	obj	_	_
14	to	to	PART	TO	_	15	mark	_	_
15	turn	turn	VERB	VB	VerbForm=Inf	11	advcl	_	_
16	eggs	egg	NOUN	NNS	Number=Plur	15	obj	_	_
17	in	in	ADP	IN	_	20	case	_	_
18	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	20	nmod:poss	_	_
19	ground	ground	NOUN	NN	Number=Sing	20	compound	_	Agree=R7-rel-agree|Haiku=20:amod|HaikuPos=ADJ:JJ:Degree=Pos
20	nest	nest	NOUN	NN	Number=Sing	15	obl	_	_
21	or	or	CCONJ	CC	_	22	cc	_	_
22	lie	lie	VERB	VB	VerbForm=Inf	15	conj	_	_
23	flat	flat	ADJ	JJ	Degree=Pos	22	xcomp	_	_
24	to	to	PART	TO	_	25	mark	_	_
25	hide	hide	VERB	VB	VerbForm=Inf	22	advcl	_	_
26	,	,	PUNCT	,	_	31	punct	_	_
27	and	and	CCONJ	CC	_	31	cc	_	_
28	an	a	DET	DT	Definite=Ind|PronType=Art	29	det	_	_
29	ostrich	ostrich	NOUN	NN	Number=Sing	31	nsubj	_	_
30	can	can	AUX	MD	VerbForm=Fin	31	aux	_	_
31	run	run	VERB	VB	VerbForm=Inf	4	conj	_	_
32	at	at	ADP	IN	_	35	case	_	_
33	about	about	ADV	RB	_	34	advmod	_	_
34	70	70	NUM	CD	NumForm=Digit|NumType=Card	35	nummod	_	_
35	kilometres	kilometre	NOUN	NNS	Number=Plur	31	obl	_	_
36	an	a	DET	DT	Definite=Ind|PronType=Art	37	det	_	_
37	hour	hour	NOUN	NN	Number=Sing	35	nmod:unmarked	_	_
38	and	and	CCONJ	CC	_	39	cc	_	_
39	kick	kick	VERB	VB	VerbForm=Inf	31	conj	_	_
40	hard	hard	ADV	RB	Degree=Pos	39	advmod	_	Agree=R5-strong|Haiku=41:advmod
41	enough	enough	ADV	RB	_	39	advmod	_	_
42	to	to	PART	TO	_	43	mark	_	_
43	hurt	hurt	VERB	VB	VerbForm=Inf	39	advcl	_	_
44	a	a	DET	DT	Definite=Ind|PronType=Art	45	det	_	_
45	lion	lion	NOUN	NN	Number=Sing	43	obj	_	_
46	.	.	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **bury** | present · do-support | Ostriches | ostriches's heads |  | sand |  |  | vn put-9.1-1 «NP V NP PP.destination»: agent=Agent head=Theme in sand=Destination |
| 2 | **lower** | present | ostriches *= ostrich* | ostriches's heads |  |  |  |  | vn put\_direction-9.4 «NP V NP»: agent=Agent head=Theme |
| 3 | **turn** | to-infinitive | ostriches *= ostrich* *not said here* | eggs |  |  |  | in ostriches's ground nest | vn crane-40.3.2 «NP V NP PP.recipient PP.theme»: agent=Agent egg=Patient in nest=Topic |
| 4 | **lie** | infinitive | ostriches *= ostrich* *not said here* |  |  |  |  | flat *property* | vn assuming\_position-50 «NP V»: agent=Agent |
| 5 | **hide** | to-infinitive | ostriches *= ostrich* *not said here* |  |  |  |  |  | vn concealment-16-1 «NP V»: agent=Agent |
| 6 | **run** | can | a ostrich |  |  | 70 kilometres  a hour |  |  | vn run-51.3.2-2-1 «NP V PP.location»: agent=Theme at kilometre=Trajectory |
| 7 | **kick** | infinitive | a ostrich *not said here* |  |  |  |  | enough, hard *property* | vn split-23.2 «NP V apart»: agent=Patient |
| 8 | **hurt** | to-infinitive | a ostrich *not said here* | a lion |  |  |  |  | vn hurt-40.8.3-2 «NP V NP»: agent=Experiencer lion=Patient |

<!-- .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:249-defences-tricks-and-myths-playing-dead-dropping-tails-ink-and-ostriches.lesson:5`.

**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 ×2. **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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