---
title: It is given that a charcoal barbecue has been introduced into an enc… — The candle and what burning is · tree and pragmatics
description: It is given that a charcoal barbecue has been introduced into an enclosed tent. Ascertain the principal hazard. Exam question 4 of lesson 11 «The candle and what burning is» of the chemistry course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; 
---

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# Exam question 4 · The candle and what burning is

<!-- .ven lang=en -->
It is given that a charcoal barbecue has been introduced into an enclosed tent. Ascertain the principal hazard.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **Who acts:** you · **What happens:** give, introduce, enclose, ascertain · **To what, where:** It, charcoal barbecue, enclosed tent, principal hazard

<!-- .vabout -->
This is exam question 4 of lesson 11 «The candle and what burning is» of the chemistry 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/chemistry/11-the-candle-and-burning/#e4).

## The question {#question}

<!-- .note -->
*Sentence 1:* It is given that a charcoal barbecue has been introduced into an enclosed tent.

```conllu
# sent_id = question:chemistry:11-the-candle-and-burning:e4:1
# text = It is given that a charcoal barbecue has been introduced into an enclosed tent.
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj:pass	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	given	give	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	that	that	SCONJ	IN	_	10	mark	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
6	charcoal	charcoal	ADJ	JJ	Degree=Pos	7	amod	_	_
7	barbecue	barbecue	NOUN	NN	Number=Sing	10	nsubj:pass	_	_
8	has	have	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	10	aux	_	_
9	been	be	AUX	VBN	Tense=Past|VerbForm=Part	10	aux:pass	_	_
10	introduced	introduce	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	advcl	_	_
11	into	into	ADP	IN	_	14	case	_	_
12	an	a	DET	DT	Definite=Ind|PronType=Art	14	det	_	_
13	enclosed	enclose	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	14	amod	_	_
14	tent	tent	NOUN	NN	Number=Sing	10	obl	_	SpaceAfter=No
15	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **give** | present · passive |  | It |  |  |  |  | vn give-13.1-1 «NP V NP»: subject=Theme |
| 2 | **introduce** | present · perfect · passive |  | a charcoal barbecue |  | a enclosed tent |  |  | vn amalgamate-22.2-3-1 «NP V NP»: subject=Patient |
| 3 | **enclose** | participle |  |  |  |  |  |  | vn contiguous\_location-47.8 «NP V NP»: agent=Theme |

<!-- .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.

<!-- .note -->
*Sentence 2:* Ascertain the principal hazard.

```conllu
# sent_id = question:chemistry:11-the-candle-and-burning:e4:2
# text = Ascertain the principal hazard.
1	Ascertain	ascertain	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
3	principal	principal	ADJ	JJ	Degree=Pos	4	amod	_	_
4	hazard	hazard	NOUN	NN	Number=Sing	1	obj	_	SpaceAfter=No
5	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **ascertain** | imperative | you *not said here* | the principal hazard |  |  |  |  | vn discover-84 «NP V NP»: agent=Agent hazard=Topic |

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
The cooling of the air within the tent

```conllu
# sent_id = question:chemistry:11-the-candle-and-burning:e4:o1:1
# text = The cooling of the air within the tent
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	cooling	cooling	NOUN	NN	Number=Sing	0	root	_	_
3	of	of	ADP	IN	_	5	case	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	air	air	NOUN	NN	Number=Sing	2	nmod	_	_
6	within	within	ADP	IN	_	8	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	tent	tent	NOUN	NN	Number=Sing	2	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **cool** |  |  | the air |  |  |  | within the tent | nom cooling «process transitive»: of=patient within=obl |

### Option 2 {#o2}

<!-- .ven lang=en -->
The production of excessive quantities of oxygen

```conllu
# sent_id = question:chemistry:11-the-candle-and-burning:e4:o2:1
# text = The production of excessive quantities of oxygen
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	production	production	NOUN	NN	Number=Sing	0	root	_	_
3	of	of	ADP	IN	_	5	case	_	_
4	excessive	excessive	ADJ	JJ	Degree=Pos	5	amod	_	_
5	quantities	quantity	NOUN	NNS	Number=Plur	2	nmod	_	_
6	of	of	ADP	IN	_	7	case	_	_
7	oxygen	oxygen	NOUN	NN	Number=Sing	5	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **produce** |  |  | excessive quantities of oxygen |  |  |  |  | nom production «act transitive»: of=patient |

### Option 3 {#o3}

<!-- .ven lang=en -->
The excessive brightness of the glowing charcoal

```conllu
# sent_id = question:chemistry:11-the-candle-and-burning:e4:o3:1
# text = The excessive brightness of the glowing charcoal
1	The	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
2	excessive	excessive	ADJ	JJ	Degree=Pos	3	amod	_	_
3	brightness	brightness	NOUN	NN	Number=Sing	0	root	_	_
4	of	of	ADP	IN	_	7	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
6	glowing	glow	VERB	VBG	VerbForm=Ger	7	amod	_	_
7	charcoal	charcoal	NOUN	NN	Number=Sing	3	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **glow** | gerund |  |  |  |  |  |  | vn light\_emission-43.1 «NP V»: agent=Theme |

### Option 4 · ✓ the right answer {#o4}

<!-- .ven lang=en -->
The accumulation of carbon monoxide, a colourless poisonous gas

```conllu
# sent_id = question:chemistry:11-the-candle-and-burning:e4:o4:1
# text = The accumulation of carbon monoxide, a colourless poisonous gas
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	accumulation	accumulation	NOUN	NN	Number=Sing	0	root	_	_
3	of	of	ADP	IN	_	5	case	_	_
4	carbon	carbon	NOUN	NN	Number=Sing	5	compound	_	_
5	monoxide	monoxide	NOUN	NN	Number=Sing	2	nmod	_	SpaceAfter=No
6	,	,	PUNCT	,	_	10	punct	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	10	det	_	_
8	colourless	colourless	ADJ	JJ	Degree=Pos	10	amod	_	_
9	poisonous	poisonous	ADJ	JJ	Degree=Pos	10	amod	_	_
10	gas	gas	NOUN	NN	Number=Sing	2	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **accumulate** |  |  | carbon monoxide |  |  |  |  | nom accumulation «process transitive»: of=patient |

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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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