---
title: Which of the following statements most accurately characterises carb… — Fire, candles and garage and garden to… · tree and pragmatics
description: Which of the following statements most accurately characterises carbon monoxide contained in car exhaust? Exam question 3 of lesson 115 «Fire, candles and garage and garden tools» of the everyday course of Mova's primary school, with the dependency tree and pragmatics of the question and of each opt
---

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# Exam question 3 · Fire, candles and garage and garden tools

<!-- .ven lang=en -->
Which of the following statements most accurately characterises carbon monoxide contained in car exhaust?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **What happens:** follow, characteris, contain · **To what, where:** carbon monoxide, car exhaust

<!-- .vabout -->
This is exam question 3 of lesson 115 «Fire, candles and garage and garden tools» of the everyday 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/everyday/115-fire-candles-and-garden-tools/#e3).

## The question {#question}

```conllu
# sent_id = question:everyday:115-fire-candles-and-garden-tools:e3:1
# text = Which of the following statements most accurately characterises carbon monoxide contained in car exhaust?
1	Which	which	PRON	WDT	PronType=Rel	8	nsubj	_	_
2	of	of	ADP	IN	_	5	case	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
4	following	follow	VERB	VBG	VerbForm=Ger	5	amod	_	_
5	statements	statement	NOUN	NNS	Number=Plur	8	obl	_	_
6	most	most	ADV	RBS	Degree=Sup	7	advmod	_	_
7	accurately	accurately	ADV	RB	_	8	advmod	_	_
8	characterises	characteris	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
9	carbon	carbon	NOUN	NN	Number=Sing	10	compound	_	_
10	monoxide	monoxide	NOUN	NN	Number=Sing	8	obj	_	_
11	contained	contain	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	10	acl	_	_
12	in	in	ADP	IN	_	14	case	_	_
13	car	car	NOUN	NN	Number=Sing	14	compound	_	_
14	exhaust	exhaust	NOUN	NN	Number=Sing	11	obl	_	SpaceAfter=No
15	?	?	PUNCT	.	_	8	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **follow** | gerund |  |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |
| 2 | **characteris** | present |  | carbon monoxide |  |  |  | of the following statements; accurately *property* | tree rules |
| 3 | **contain** | participle |  | carbon monoxide *not said here* |  | car exhaust |  |  | vn fit-54.3 «NP V NP PP.location»: agent=Agent in exhaust=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.

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
It is a harmless gas that merely smells of petrol

```conllu
# sent_id = question:everyday:115-fire-candles-and-garden-tools:e3:o1:1
# text = It is a harmless gas that merely smells of petrol
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	5	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
4	harmless	harmless	ADJ	JJ	Degree=Pos	5	amod	_	_
5	gas	gas	NOUN	NN	Number=Sing	0	root	_	_
6	that	that	PRON	WDT	PronType=Rel	8	nsubj	_	_
7	merely	merely	ADV	RB	_	8	advmod	_	_
8	smells	smell	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	acl:relcl	_	_
9	of	of	ADP	IN	_	10	case	_	_
10	petrol	petrol	NOUN	NN	Number=Sing	8	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | It | a harmless gas |  |  |  |  | tree rules |
| 2 | **smell** | present | a harmless gas |  |  |  |  | of petrol; merely *property* | vn smell\_emission-43.3 «NP V PP.theme»: agent=Location of petrol=Theme |

### Option 2 {#o2}

<!-- .ven lang=en -->
It is dangerous only when it is visible as smoke

```conllu
# sent_id = question:everyday:115-fire-candles-and-garden-tools:e3:o2:1
# text = It is dangerous only when it is visible as smoke
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	dangerous	dangerous	ADJ	JJ	Degree=Pos	0	root	_	_
4	only	only	ADV	RB	_	8	advmod	_	_
5	when	when	SCONJ	WRB	_	8	mark	_	_
6	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	8	nsubj	_	_
7	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	cop	_	_
8	visible	visible	ADJ	JJ	Degree=Pos	3	advcl	_	_
9	as	as	ADP	IN	_	10	case	_	_
10	smoke	smoke	NOUN	NN	Number=Sing	8	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | It |  |  |  |  | dangerous *property* | tree rules |
| 2 | **is** | present | it |  |  |  |  | as smoke; visible *property* | tree rules |

### Option 3 · ✓ the right answer {#o3}

<!-- .ven lang=en -->
It is poisonous and can be neither seen nor smelt

```conllu
# sent_id = question:everyday:115-fire-candles-and-garden-tools:e3:o3:1
# text = It is poisonous and can be neither seen nor smelt
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	poisonous	poisonous	ADJ	JJ	Degree=Pos	0	root	_	_
4	and	and	CCONJ	CC	_	8	cc	_	_
5	can	can	AUX	MD	VerbForm=Fin	8	aux	_	_
6	be	be	AUX	VB	VerbForm=Inf	8	aux:pass	_	_
7	neither	neither	ADV	RB	_	8	advmod	_	_
8	seen	see	VERB	VBN	Tense=Past|VerbForm=Part	3	conj	_	_
9	nor	nor	CCONJ	CC	Polarity=Neg	10	cc	_	_
10	smelt	smelt	NOUN	NN	Number=Sing	3	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | It |  |  |  |  | poisonous *property* | tree rules |
| 2 | **see** | can · passive |  |  |  |  |  | neither *property* | vn comprehend-87.2-1-1 «NP V» |

### Option 4 {#o4}

<!-- .ven lang=en -->
It is poisonous only when the car is moving fast

```conllu
# sent_id = question:everyday:115-fire-candles-and-garden-tools:e3:o4:1
# text = It is poisonous only when the car is moving fast
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	poisonous	poisonous	ADJ	JJ	Degree=Pos	0	root	_	_
4	only	only	ADV	RB	_	9	advmod	_	_
5	when	when	ADV	WRB	PronType=Int	9	advmod	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	car	car	NOUN	NN	Number=Sing	9	nsubj	_	_
8	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	aux	_	_
9	moving	move	VERB	VBG	Tense=Pres|VerbForm=Part	3	advcl	_	_
10	fast	fast	ADV	RB	Degree=Pos	9	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | It |  |  |  |  | poisonous *property* | tree rules |
| 2 | **move** | present · progressive | the car |  |  |  |  | fast *property* | vn roll-51.3.1 «NP.theme V»: agent=Theme |

<!-- div src -->

**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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