---
title: Ascertain the aggregate number of toes possessed by two adult ostric… — Myth check: do ostriches bury their he… · tree and pragmatics
description: Ascertain the aggregate number of toes possessed by two adult ostriches, given that each foot bears the number characteristic of the species. Exam question 3 of lesson 151 «Myth check: do ostriches bury their heads in the sand?» of the biology course of Mova's primary school, with the dependency tre
---

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# Exam question 3 · Myth check: do ostriches bury their heads in the sand?

<!-- .ven lang=en -->
Ascertain the aggregate number of toes possessed by two adult ostriches, given that each foot bears the number characteristic of the species.

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**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **Who acts:** you, two adult ostriches · **What happens:** ascertain, possess, give · **To what, where:** aggregate number, toes, foot bears

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This is exam question 3 of lesson 151 «Myth check: do ostriches bury their heads in the sand?» of the biology course of Mova's primary school, asked in stiff, formal language. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/biology/151-ostriches-and-heads-in-the-sand/#e3).

## The question {#question}

```conllu
# sent_id = question:biology:151-ostriches-and-heads-in-the-sand:e3:1
# text = Ascertain the aggregate number of toes possessed by two adult ostriches, given that each foot bears the number characteristic of the species.
1	Ascertain	ascertain	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
3	aggregate	aggregate	NOUN	NN	Number=Sing	4	compound	_	_
4	number	number	NOUN	NN	Number=Sing	1	obj	_	_
5	of	of	ADP	IN	_	6	case	_	_
6	toes	toe	NOUN	NNS	Number=Plur	4	nmod	_	_
7	possessed	possess	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	6	acl	_	_
8	by	by	ADP	IN	_	11	case	_	_
9	two	two	NUM	CD	NumForm=Word|NumType=Card	11	nummod	_	_
10	adult	adult	ADJ	JJ	Degree=Pos	11	amod	_	_
11	ostriches	ostrich	NOUN	NNS	Number=Plur	7	obl	_	SpaceAfter=No
12	,	,	PUNCT	,	_	13	punct	_	_
13	given	give	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	11	acl	_	_
14	that	that	SCONJ	IN	_	17	mark	_	_
15	each	each	DET	DT	PronType=Tot	17	det	_	_
16	foot	foot	NOUN	NN	Number=Sing	17	compound	_	_
17	bears	bear	NOUN	NNS	Number=Plur	13	obl	_	_
18	the	the	DET	DT	Definite=Def|PronType=Art	20	det	_	_
19	number	number	NOUN	NN	Number=Sing	20	compound	_	_
20	characteristic	characteristic	NOUN	NN	Number=Sing	17	nmod	_	_
21	of	of	ADP	IN	_	23	case	_	_
22	the	the	DET	DT	Definite=Def|PronType=Art	23	det	_	_
23	species	species	NOUN	NNS	Number=Plur	20	nmod	_	SpaceAfter=No
24	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **ascertain** | imperative | you *not said here* | the aggregate number of toes |  |  |  |  | vn discover-84 «NP V NP»: agent=Agent number=Topic |
| 2 | **possess** | participle |  | toes *not said here* |  |  |  | by two adult ostriches | vn own-100.1 «NP V NP»: agent=Pivot |
| 3 | **give** | participle | two adult ostriches *not said here* | each foot bears  the number characteristic of the species |  |  |  |  | vn break\_down-45.8 «NP V»: agent=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.

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
Sixteen

```conllu
# sent_id = question:biology:151-ostriches-and-heads-in-the-sand:e3:o1:1
# text = Sixteen
1	Sixteen	sixteen	NUM	CD	NumForm=Word|NumType=Card	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 2 {#o2}

<!-- .ven lang=en -->
Twelve

```conllu
# sent_id = question:biology:151-ostriches-and-heads-in-the-sand:e3:o2:1
# text = Twelve
1	Twelve	twelve	NUM	CD	NumForm=Word|NumType=Card	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 3 {#o3}

<!-- .ven lang=en -->
Twenty

```conllu
# sent_id = question:biology:151-ostriches-and-heads-in-the-sand:e3:o3:1
# text = Twenty
1	Twenty	twenty	NUM	CD	NumForm=Word|NumType=Card	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 4 · ✓ the right answer {#o4}

<!-- .ven lang=en -->
Eight

```conllu
# sent_id = question:biology:151-ostriches-and-heads-in-the-sand:e3:o4:1
# text = Eight
1	Eight	eight	NUM	CD	NumForm=Word|NumType=Card	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

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- ← previous: [Myth check: do ostriches bury their he…, exam 2](https://md.mova.elamur.ai/free/en/corpora/questions/biology/151-ostriches-and-heads-in-the-sand/e2/)
- next →: [Myth check: do ostriches bury their he…, exam 4](https://md.mova.elamur.ai/free/en/corpora/questions/biology/151-ostriches-and-heads-in-the-sand/e4/)
- ↑ back to [Myth check: do ostriches bury their heads in the sand?](https://md.mova.elamur.ai/free/en/corpora/questions/biology/151-ostriches-and-heads-in-the-sand/)

