---
title: An ostrich egg is the largest egg of any living bird, about 15 centi… — Myth check: do ostriches bury their heads in the… · tree and pragmatics
description: An ostrich egg is the largest egg of any living bird, about 15 centimetres long and as heavy as about 20 to 24 hen's eggs; its shell is so strong that a grown-up can stand on it. Who acts: ostrich egg, shell. A sentence of the lesson «Myth check: do ostriches bury their heads in the sand?» of the bi
---

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# Myth check: do ostriches bury their heads in the sand?, sentence 10

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An ostrich egg is the largest egg of any living bird, about 15 centimetres long and as heavy as about 20 to 24 hen's eggs; its shell is so strong that a grown-up can stand on it.

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**Who acts:** ostrich egg, shell · **What happens:** be, grow up, stand · **To what, where:** largest egg

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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 (ostrich egg, shell), 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:10
# text = An ostrich egg is the largest egg of any living bird, about 15 centimetres long and as heavy as about 20 to 24 hen's eggs; its shell is so strong that a grown-up can stand on it.
# 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): R4-particle ×1, R5-strong ×1, R7-rel-agree ×1
1	An	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	ostrich	ostrich	NOUN	NN	Number=Sing	3	compound	_	_
3	egg	egg	NOUN	NN	Number=Sing	7	nsubj	_	_
4	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	cop	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
6	largest	large	ADJ	JJS	Degree=Sup	7	amod	_	_
7	egg	egg	NOUN	NN	Number=Sing	0	root	_	_
8	of	of	ADP	IN	_	11	case	_	_
9	any	any	DET	DT	PronType=Ind	11	det	_	_
10	living	living	ADJ	JJ	Degree=Pos	11	amod	_	_
11	bird	bird	NOUN	NN	Number=Sing	7	nmod	_	_
12	,	,	PUNCT	,	_	15	punct	_	_
13	about	about	ADV	RB	_	14	advmod	_	_
14	15	15	NUM	CD	NumForm=Digit|NumType=Card	15	nummod	_	_
15	centimetres	centimetre	NOUN	NNS	Number=Plur	16	obl:unmarked	_	_
16	long	long	ADJ	JJ	Degree=Pos	7	parataxis	_	_
17	and	and	CCONJ	CC	_	19	cc	_	_
18	as	as	ADV	RB	_	19	advmod	_	Agree=R7-rel-agree|Haiku=19:case|HaikuPos=ADP:IN:_
19	heavy	heavy	ADJ	JJ	Degree=Pos	16	conj	_	_
20	as	as	ADP	IN	_	27	case	_	_
21	about	about	ADV	RB	_	22	advmod	_	_
22	20	20	NUM	CD	NumForm=Digit|NumType=Card	27	nummod	_	_
23	to	to	ADP	IN	_	24	case	_	_
24	24	24	NUM	CD	NumForm=Digit|NumType=Card	22	nmod	_	_
25	hen	hen	NOUN	NN	Number=Sing	27	nmod:poss	_	_
26	's	's	PART	POS	_	25	case	_	_
27	eggs	egg	NOUN	NNS	Number=Plur	19	obl	_	_
28	;	;	PUNCT	:	_	33	punct	_	_
29	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	30	nmod:poss	_	_
30	shell	shell	NOUN	NN	Number=Sing	33	nsubj	_	_
31	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	33	cop	_	_
32	so	so	ADV	RB	_	33	advmod	_	_
33	strong	strong	ADJ	JJ	Degree=Pos	19	conj	_	_
34	that	that	SCONJ	IN	_	40	mark	_	_
35	a	a	DET	DT	Definite=Ind|PronType=Art	38	det	_	Agree=R5-strong|Haiku=36:det
36	grown	grow	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	40	nsubj	_	_
37	-	-	PUNCT	HYPH	_	38	punct	_	_
38	up	up	NOUN	NN	Number=Sing	36	compound:prt	_	Agree=R4-particle|Haiku=36:compound|HaikuPos=ADP:RP:_
39	can	can	AUX	MD	VerbForm=Fin	40	aux	_	_
40	stand	stand	VERB	VB	VerbForm=Inf	33	advcl	_	_
41	on	on	ADP	IN	_	42	case	_	_
42	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	40	obl	_	_
43	.	.	PUNCT	.	_	7	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 | **is a** | present | a ostrich egg | the largest egg |  |  |  | of any living bird | tree rules |
| 2 | **is** | present | bird's shell |  |  |  |  | strong *property* | tree rules |
| 3 | **grow up** | participle |  |  |  |  |  |  | vn appear-48.1.1 «NP V»: agent=Theme |
| 4 | **stand** | can |  |  |  |  |  | on bird | vn assuming\_position-50 «NP V PP.location»: agent=Agent on it=Location |

<!-- .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:10`.

**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): R4-particle ×1, 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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- ← previous: [Myth check: do ostriches bury their he…, 9](https://md.mova.elamur.ai/free/en/corpora/school/biology/151-ostriches-and-heads-in-the-sand/9/)
- next →: [Myth check: do ostriches bury their he…, 11](https://md.mova.elamur.ai/free/en/corpora/school/biology/151-ostriches-and-heads-in-the-sand/11/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/biology/151-ostriches-and-heads-in-the-sand/)

