---
title: Why is carbon monoxide from a car so dangerous? — Fire, candles and garage and garden to… · tree and pragmatics
description: Why is carbon monoxide from a car so dangerous? Test 5 · ★ 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 option; Mova's choice was right.
---

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# Test 5 · ★ · Fire, candles and garage and garden tools

<!-- .ven lang=en -->
Why is carbon monoxide from a car so dangerous?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **What happens:** be · **To what, where:** carbon monoxide

<!-- .vabout -->
This is test 5 · ★ of lesson 115 «Fire, candles and garage and garden tools» of the everyday 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/everyday/115-fire-candles-and-garden-tools/#t5).

## The question {#question}

```conllu
# sent_id = question:everyday:115-fire-candles-and-garden-tools:t5:1
# text = Why is carbon monoxide from a car so dangerous?
1	Why	why	ADV	WRB	PronType=Int	4	advmod	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	carbon	carbon	NOUN	NN	Number=Sing	4	compound	_	_
4	monoxide	monoxide	NOUN	NN	Number=Sing	9	nsubj	_	_
5	from	from	ADP	IN	_	7	case	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	car	car	NOUN	NN	Number=Sing	9	obl	_	_
8	so	so	ADV	RB	_	9	advmod	_	_
9	dangerous	dangerous	ADJ	JJ	Degree=Pos	0	root	_	SpaceAfter=No
10	?	?	PUNCT	.	_	9	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present |  | carbon monoxide |  |  |  |  | tree rules |

<!-- .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 · ✓ the right answer {#o1}

<!-- .ven lang=en -->
You cannot see or smell it, but it poisons you

```conllu
# sent_id = question:everyday:115-fire-candles-and-garden-tools:t5:o1:1
# text = You cannot see or smell it, but it poisons you
1	You	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	4	nsubj	_	_
2	can	can	AUX	MD	VerbForm=Fin	4	aux	_	SpaceAfter=No
3	not	not	PART	RB	Polarity=Neg	4	advmod	_	_
4	see	see	VERB	VB	VerbForm=Inf	0	root	_	_
5	or	or	CCONJ	CC	_	6	cc	_	_
6	smell	smell	VERB	VB	VerbForm=Inf	4	conj	_	_
7	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	6	obj	_	SpaceAfter=No
8	,	,	PUNCT	,	_	11	punct	_	_
9	but	but	CCONJ	CC	_	11	cc	_	_
10	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	11	nsubj	_	_
11	poisons	poison	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	conj	_	_
12	you	you	PRON	PRP	Case=Acc|Person=2|PronType=Prs	11	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **see** | can | You |  |  |  |  |  | vn comprehend-87.2-1-1 «NP V»: agent=Experiencer |
| 2 | **smell** | infinitive | You *not said here* | it |  |  |  |  | vn see-30.1 «NP V NP»: agent=Experiencer it=Stimulus |
| 3 | **poison** | present | it | you |  |  |  |  | vn poison-42.2 «NP V NP»: agent=Agent you=Patient |

### Option 2 {#o2}

<!-- .ven lang=en -->
It smells so strongly of rotten eggs that everyone runs away

```conllu
# sent_id = question:everyday:115-fire-candles-and-garden-tools:t5:o2:1
# text = It smells so strongly of rotten eggs that everyone runs away
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	smells	smell	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	so	so	ADV	RB	_	4	advmod	_	_
4	strongly	strongly	ADV	RB	_	2	advmod	_	_
5	of	of	ADP	IN	_	7	case	_	_
6	rotten	rotten	ADJ	JJ	Degree=Pos	7	amod	_	_
7	eggs	egg	NOUN	NNS	Number=Plur	2	obl	_	_
8	that	that	PRON	WDT	PronType=Rel	10	nsubj	_	_
9	everyone	everyone	PRON	NN	Number=Sing|PronType=Tot	10	nsubj	_	_
10	runs	run	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	acl:relcl	_	_
11	away	away	ADV	RB	_	10	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **smell** | present | It |  |  |  |  | of rotten eggs; strongly *property* | vn smell\_emission-43.3 «NP V PP.theme»: agent=Location of egg=Theme |
| 2 | **run away** | present | rotten eggs |  |  |  |  | away *property* | vn run-51.3.2-2-1 «NP V»: agent=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
It only hurts the car

```conllu
# sent_id = question:everyday:115-fire-candles-and-garden-tools:t5:o3:1
# text = It only hurts the car
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	only	only	ADV	RB	_	3	advmod	_	_
3	hurts	hurt	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	car	car	NOUN	NN	Number=Sing	3	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **hurt** | present | It | the car |  |  |  |  | vn hurt-40.8.3-2 «NP V NP»: agent=Experiencer car=Patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
It is always thick black smoke

```conllu
# sent_id = question:everyday:115-fire-candles-and-garden-tools:t5:o4:1
# text = It is always thick black smoke
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	6	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	cop	_	_
3	always	always	ADV	RB	PronType=Tot	4	advmod	_	_
4	thick	thick	ADJ	JJ	Degree=Pos	6	amod	_	_
5	black	black	ADJ	JJ	Degree=Pos	6	amod	_	_
6	smoke	smoke	NOUN	NN	Number=Sing	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | It | thick black smoke |  |  |  |  | tree rules |

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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.

<!-- /div -->

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