---
title: Why is the air dirtier for a few hours after a big display? — Colours of fire: fireworks · tree and pragmatics
description: Why is the air dirtier for a few hours after a big display? Test 11 · ★ of lesson 26 «Colours of fire: fireworks» of the chemistry 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 11 · ★ · Colours of fire: fireworks

<!-- .ven lang=en -->
Why is the air dirtier for a few hours after a big display?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** air · **What happens:** be

<!-- .vabout -->
This is test 11 · ★ of lesson 26 «Colours of fire: fireworks» of the chemistry 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/chemistry/26-colours-of-fire-fireworks/#t11).

## The question {#question}

```conllu
# sent_id = question:chemistry:26-colours-of-fire-fireworks:t11:1
# text = Why is the air dirtier for a few hours after a big display?
1	Why	why	ADV	WRB	PronType=Int	5	advmod	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	air	air	NOUN	NN	Number=Sing	5	nsubj	_	_
5	dirtier	dirty	ADJ	JJR	Degree=Cmp	0	root	_	_
6	for	for	ADP	IN	_	9	case	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	9	det	_	_
8	few	few	ADJ	JJ	Degree=Pos	9	amod	_	_
9	hours	hour	NOUN	NNS	Number=Plur	5	obl	_	_
10	after	after	ADP	IN	_	13	case	_	_
11	a	a	DET	DT	Definite=Ind|PronType=Art	13	det	_	_
12	big	big	ADJ	JJ	Degree=Pos	13	amod	_	_
13	display	display	NOUN	NN	Number=Sing	9	nmod	_	SpaceAfter=No
14	?	?	PUNCT	.	_	5	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | the air |  |  |  | hour | dirty *property* | 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 -->
Fireworks leave smoke of tiny particles

```conllu
# sent_id = question:chemistry:26-colours-of-fire-fireworks:t11:o1:1
# text = Fireworks leave smoke of tiny particles
1	Fireworks	firework	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	leave	leave	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	smoke	smoke	NOUN	NN	Number=Sing	2	obj	_	_
4	of	of	ADP	IN	_	6	case	_	_
5	tiny	tiny	ADJ	JJ	Degree=Pos	6	amod	_	_
6	particles	particle	NOUN	NNS	Number=Plur	3	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **leave** | present | Fireworks | smoke of tiny particles |  |  |  |  | vn keep-15.2 «NP V NP»: agent=Agent smoke=Theme |
| 2 | **smoke** |  | tiny particles |  |  |  |  |  | nom smoke «phenomenon intransitive»: of=agent |

### Option 2 {#o2}

<!-- .ven lang=en -->
The bangs shake dust off buildings

```conllu
# sent_id = question:chemistry:26-colours-of-fire-fireworks:t11:o2:1
# text = The bangs shake dust off buildings
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	bangs	bang	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	shake	shake	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	dust	dust	NOUN	NN	Number=Sing	3	obj	_	_
5	off	off	ADP	RP	_	3	compound:prt	_	_
6	buildings	building	NOUN	NNS	Number=Plur	3	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **shake off** | present | the bangs | dust |  |  |  |  | vn funnel-9.3-1-1 «NP V NP ADVP»: agent=Agent dust=Theme building=Destination |

### Option 3 {#o3}

<!-- .ven lang=en -->
The lights heat the air and make fog

```conllu
# sent_id = question:chemistry:26-colours-of-fire-fireworks:t11:o3:1
# text = The lights heat the air and make fog
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	lights	light	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	heat	heat	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	air	air	NOUN	NN	Number=Sing	3	obj	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	make	make	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
8	fog	fog	NOUN	NN	Number=Sing	7	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **heat** | present | the lights | the air |  |  |  |  | vn cooking-45.3 «NP V NP.patient»: agent=Agent air=Patient |
| 2 | **make** | present | the lights *not said here* | fog |  |  |  |  | vn build-26.1-1 «NP.asset V NP»: agent=Asset fog=Product |

### Option 4 {#o4}

<!-- .ven lang=en -->
Fireworks suck all the clean air up into the sky

```conllu
# sent_id = question:chemistry:26-colours-of-fire-fireworks:t11:o4:1
# text = Fireworks suck all the clean air up into the sky
1	Fireworks	firework	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	suck	suck	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	all	all	DET	PDT	PronType=Tot	6	det:predet	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
5	clean	clean	ADJ	JJ	Degree=Pos	6	amod	_	_
6	air	air	NOUN	NN	Number=Sing	2	obj	_	_
7	up	up	ADV	RB	_	2	compound:prt	_	_
8	into	into	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	sky	sky	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **suck up** | present | Fireworks | all clean air |  | the sky |  |  | vn wipe\_manner-10.4.1-1 «NP V NP.source»: agent=Agent air=Source |

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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: [Colours of fire: fireworks, test 10](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/26-colours-of-fire-fireworks/t10/)
- next →: [Colours of fire: fireworks, exam 1](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/26-colours-of-fire-fireworks/e1/)
- ↑ back to [Colours of fire: fireworks](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/26-colours-of-fire-fireworks/)