---
title: Two ostriches walk past. How many legs and wings do they have altoge… — Myth check: do ostriches bury their he… · tree and pragmatics
description: Two ostriches walk past. How many legs and wings do they have altogether? Test 4 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 tree and pragmatics of the question and of each option; Mova's choice was right.
---

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# Test 4 · Myth check: do ostriches bury their heads in the sand?

<!-- .ven lang=en -->
Two ostriches walk past. How many legs and wings do they have altogether?

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**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** Two ostriches, many legs · **What happens:** walk, have

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This is test 4 of lesson 151 «Myth check: do ostriches bury their heads in the sand?» of the biology course of Mova's primary school. 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/#t4).

## The question {#question}

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*Sentence 1:* Two ostriches walk past.

```conllu
# sent_id = question:biology:151-ostriches-and-heads-in-the-sand:t4:1
# text = Two ostriches walk past.
1	Two	two	NUM	CD	NumForm=Word|NumType=Card	2	nummod	_	_
2	ostriches	ostrich	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	walk	walk	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	past	past	ADV	RB	_	3	advmod	_	SpaceAfter=No
5	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **walk** | present | Two ostriches |  |  |  |  | past *property* | vn run-51.3.2-2-1 «NP V»: agent=Theme |

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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.

<!-- .note -->
*Sentence 2:* How many legs and wings do they have altogether?

```conllu
# sent_id = question:biology:151-ostriches-and-heads-in-the-sand:t4:2
# text = How many legs and wings do they have altogether?
1	How	how	ADV	WRB	PronType=Int	2	advmod	_	_
2	many	many	ADJ	JJ	Degree=Pos	3	amod	_	_
3	legs	leg	NOUN	NNS	Number=Plur	8	nsubj	_	_
4	and	and	CCONJ	CC	_	5	cc	_	_
5	wings	wing	NOUN	NNS	Number=Plur	3	conj	_	_
6	do	do	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	8	aux	_	_
7	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	8	nsubj	_	_
8	have	have	VERB	VB	VerbForm=Inf	0	root	_	_
9	altogether	altogether	ADV	RB	_	8	advmod	_	SpaceAfter=No
10	?	?	PUNCT	.	_	8	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present · do-support | many legs and wings |  |  |  |  | altogether *property* | vn birth-28.2-1 «NP V NP»: agent=Agent |

## The options {#options}

### Option 1 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
4 legs and 4 wings

```conllu
# sent_id = question:biology:151-ostriches-and-heads-in-the-sand:t4:o1:1
# text = 4 legs and 4 wings
1	4	4	NUM	CD	NumForm=Digit|NumType=Card	2	nummod	_	_
2	legs	leg	NOUN	NNS	Number=Plur	0	root	_	_
3	and	and	CCONJ	CC	_	5	cc	_	_
4	4	4	NUM	CD	NumForm=Digit|NumType=Card	5	nummod	_	_
5	wings	wing	NOUN	NNS	Number=Plur	2	conj	_	_
```

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

### Option 2 {#o2}

<!-- .ven lang=en -->
2 legs and 2 wings

```conllu
# sent_id = question:biology:151-ostriches-and-heads-in-the-sand:t4:o2:1
# text = 2 legs and 2 wings
1	2	2	NUM	CD	NumForm=Digit|NumType=Card	2	nummod	_	_
2	legs	leg	NOUN	NNS	Number=Plur	0	root	_	_
3	and	and	CCONJ	CC	_	5	cc	_	_
4	2	2	NUM	CD	NumForm=Digit|NumType=Card	5	nummod	_	_
5	wings	wing	NOUN	NNS	Number=Plur	2	conj	_	_
```

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

### Option 3 {#o3}

<!-- .ven lang=en -->
8 legs and 4 wings

```conllu
# sent_id = question:biology:151-ostriches-and-heads-in-the-sand:t4:o3:1
# text = 8 legs and 4 wings
1	8	8	NUM	CD	NumForm=Digit|NumType=Card	2	nummod	_	_
2	legs	leg	NOUN	NNS	Number=Plur	0	root	_	_
3	and	and	CCONJ	CC	_	5	cc	_	_
4	4	4	NUM	CD	NumForm=Digit|NumType=Card	5	nummod	_	_
5	wings	wing	NOUN	NNS	Number=Plur	2	conj	_	_
```

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

### Option 4 {#o4}

<!-- .ven lang=en -->
4 legs and no wings

```conllu
# sent_id = question:biology:151-ostriches-and-heads-in-the-sand:t4:o4:1
# text = 4 legs and no wings
1	4	4	NUM	CD	NumForm=Digit|NumType=Card	2	nummod	_	_
2	legs	leg	NOUN	NNS	Number=Plur	0	root	_	_
3	and	and	CCONJ	CC	_	5	cc	_	_
4	no	no	DET	DT	PronType=Neg	5	det	_	_
5	wings	wing	NOUN	NNS	Number=Plur	2	conj	_	_
```

<!-- .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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- ↑ 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/)