---
title: why does the co alarm matter, can't we smell it — Thinking it through: the science behin… · tree and pragmatics
description: why does the co alarm matter, can't we smell it Test 12 · ★★★ of lesson 40 «Thinking it through: the science behind home safety» 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 12 · ★★★ · Thinking it through: the science behind home safety

<!-- .ven lang=en -->
why does the co alarm matter, can't we smell it

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** we · **What happens:** do, not smell · **To what, where:** co matter, matter

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This is test 12 · ★★★ of lesson 40 «Thinking it through: the science behind home safety» 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/40-home-safety-reasoning/#t12).

## The question {#question}

```conllu
# sent_id = question:everyday:40-home-safety-reasoning:t12:1
# text = why does the co alarm matter, can't we smell it
1	why	why	ADV	WRB	PronType=Int	2	advmod	_	_
2	does	do	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
4	co	co	X	AFX	_	6	compound	_	_
5	alarm	alarm	NOUN	NN	Number=Sing	4	goeswith	_	_
6	matter	matter	NOUN	NN	Number=Sing	2	obj	_	SpaceAfter=No
7	,	,	PUNCT	,	_	11	punct	_	_
8	ca	can	AUX	MD	VerbForm=Fin	11	aux	_	SpaceAfter=No
9	n't	not	PART	RB	Polarity=Neg	11	advmod	_	_
10	we	we	PRON	PRP	Case=Nom|Number=Plur|Person=1|PronType=Prs	11	nsubj	_	_
11	smell	smell	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	6	conj	_	_
12	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	11	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **do** | present |  | the co matter |  |  |  |  | vn act-114-1 «NP V NP»: agent=Agent matter=Eventuality |
| 2 | **not** **smell** | can | we | matter |  |  |  |  | vn see-30.1 «NP V NP»: agent=Experiencer it=Stimulus |

<!-- .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 -->
No, carbon monoxide has no smell

```conllu
# sent_id = question:everyday:40-home-safety-reasoning:t12:o1:1
# text = No, carbon monoxide has no smell
1	No	no	INTJ	UH	Polarity=Neg	5	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	5	punct	_	_
3	carbon	carbon	NOUN	NN	Number=Sing	4	compound	_	_
4	monoxide	monoxide	NOUN	NN	Number=Sing	5	nsubj	_	_
5	has	have	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	no	no	DET	DT	PronType=Neg	7	det	_	_
7	smell	smell	NOUN	NN	Number=Sing	5	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | carbon monoxide | no smell |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent smell=Patient |

### Option 2 {#o2}

<!-- .ven lang=en -->
You can see it like fog

```conllu
# sent_id = question:everyday:40-home-safety-reasoning:t12:o2:1
# text = You can see it like fog
1	You	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	3	nsubj	_	_
2	can	can	AUX	MD	VerbForm=Fin	3	aux	_	_
3	see	see	VERB	VB	VerbForm=Inf	0	root	_	_
4	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	obj	_	_
5	like	like	ADP	IN	_	6	case	_	_
6	fog	fog	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **see** | can | You | it |  |  |  | like fog | vn comprehend-87.2-1-1 «NP V NP»: agent=Experiencer it=Stimulus |

### Option 3 {#o3}

<!-- .ven lang=en -->
Yes, it's a thick black smoke you'd spot

```conllu
# sent_id = question:everyday:40-home-safety-reasoning:t12:o3:1
# text = Yes, it's a thick black smoke you'd spot
1	Yes	yes	INTJ	UH	Polarity=Pos	8	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	8	nsubj	_	SpaceAfter=No
4	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	cop	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
6	thick	thick	ADJ	JJ	Degree=Pos	8	amod	_	_
7	black	black	ADJ	JJ	Degree=Pos	8	amod	_	_
8	smoke	smoke	NOUN	NN	Number=Sing	0	root	_	_
9	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	11	nsubj	_	SpaceAfter=No
10	'd	would	AUX	MD	VerbForm=Fin	11	aux	_	_
11	spot	spot	VERB	VB	VerbForm=Inf	8	acl:relcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | it | a thick black smoke |  |  |  |  | tree rules |
| 2 | **spot** | would | you | a thick black smoke *not said here* |  |  |  |  | vn fill-9.8-1 «NP V NP.destination»: agent=Agent smoke=Destination |

### Option 4 {#o4}

<!-- .ven lang=en -->
Yes, it smells of eggs

```conllu
# sent_id = question:everyday:40-home-safety-reasoning:t12:o4:1
# text = Yes, it smells of eggs
1	Yes	yes	INTJ	UH	Polarity=Pos	4	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
4	smells	smell	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	of	of	ADP	IN	_	6	case	_	_
6	eggs	egg	NOUN	NNS	Number=Plur	4	obl	_	_
```

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

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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: [Thinking it through: the science behin…, test 11](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/40-home-safety-reasoning/t11/)
- next →: [Thinking it through: the science behin…, test 13](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/40-home-safety-reasoning/t13/)
- ↑ back to [Thinking it through: the science behind home safety](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/40-home-safety-reasoning/)