---
title: "why don't gas hobs leave black crap on pans but candles do on plate… — The candle and what burning is · tree and pragmatics
description: "why don't gas hobs leave black crap on pans but candles do on plates" Best answer? Test 3 · ★★★ 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; Mova's choice was right.
---

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# Test 3 · ★★★ · The candle and what burning is

<!-- .ven lang=en -->
"why don't gas hobs leave black crap on pans but candles do on plates" Best answer?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 2 · right ✓ · **Who acts:** gas hobs, candles · **What happens:** leave, do · **To what, where:** black crap, pans, plates

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This is test 3 · ★★★ of lesson 11 «The candle and what burning is» 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/11-the-candle-and-burning/#t3).

## The question {#question}

```conllu
# sent_id = question:chemistry:11-the-candle-and-burning:t3:1
# text = "why don't gas hobs leave black crap on pans but candles do on plates" Best answer?
1	"	"	PUNCT	``	_	7	punct	_	SpaceAfter=No
2	why	why	ADV	WRB	PronType=Int	7	advmod	_	_
3	do	do	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	7	aux	_	SpaceAfter=No
4	n't	not	PART	RB	Polarity=Neg	6	advmod	_	_
5	gas	gas	NOUN	NN	Number=Sing	6	compound	_	_
6	hobs	hob	NOUN	NNS	Number=Plur	7	nsubj	_	_
7	leave	leave	VERB	VBP	Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin	0	root	_	_
8	black	black	ADJ	JJ	Degree=Pos	9	amod	_	_
9	crap	crap	NOUN	NN	Number=Sing	7	obj	_	_
10	on	on	ADP	IN	_	11	case	_	_
11	pans	pan	NOUN	NNS	Number=Plur	7	obl	_	_
12	but	but	CCONJ	CC	_	14	cc	_	_
13	candles	candle	NOUN	NNS	Number=Plur	14	nsubj	_	_
14	do	do	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	7	conj	_	_
15	on	on	ADP	IN	_	16	case	_	_
16	plates	plate	NOUN	NNS	Number=Plur	14	obl	_	SpaceAfter=No
17	"	"	PUNCT	``	_	19	punct	_	_
18	Best	good	ADJ	JJS	Degree=Sup	19	amod	_	_
19	answer	answer	NOUN	NN	Number=Sing	16	conj	_	SpaceAfter=No
20	?	?	PUNCT	.	_	7	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **leave** *in a quote* | present · do-support | gas hobs | black crap |  | pans |  |  | vn keep-15.2 «NP V NP PP.location»: agent=Agent crap=Theme on pan=Location |
| 2 | **do** *in a quote* | present | candles |  |  | plates and Best answer |  |  | vn act-114-1 «NP V»: agent=Agent |

<!-- .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 {#o1}

<!-- .ven lang=en -->
Gas hobs are wiped clean by tiny robots

```conllu
# sent_id = question:chemistry:11-the-candle-and-burning:t3:o1:1
# text = Gas hobs are wiped clean by tiny robots
1	Gas	gas	NOUN	NN	Number=Sing	2	compound	_	_
2	hobs	hob	NOUN	NNS	Number=Plur	4	nsubj:pass	_	_
3	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	aux:pass	_	_
4	wiped	wipe	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
5	clean	clean	ADJ	JJ	Degree=Pos	4	xcomp	_	_
6	by	by	ADP	IN	_	8	case	_	_
7	tiny	tiny	ADJ	JJ	Degree=Pos	8	amod	_	_
8	robots	robot	NOUN	NNS	Number=Plur	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **wipe** | present · passive | tiny robots | Gas hobs |  |  |  | clean *property* | vn wipe\_manner-10.4.1-1 «NP V NP.source»: agent=Agent subject=Source |

### Option 2 · ← Mova's choice · ✓ the right answer {#o2}

<!-- .ven lang=en -->
Gas mixed with air burns cleanly with no soot

```conllu
# sent_id = question:chemistry:11-the-candle-and-burning:t3:o2:1
# text = Gas mixed with air burns cleanly with no soot
1	Gas	gas	NOUN	NN	Number=Sing	5	nsubj	_	_
2	mixed	mix	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	1	acl	_	_
3	with	with	ADP	IN	_	4	case	_	_
4	air	air	NOUN	NN	Number=Sing	2	obl	_	_
5	burns	burn	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	cleanly	cleanly	ADV	RB	_	5	advmod	_	_
7	with	with	ADP	IN	_	9	case	_	_
8	no	no	DET	DT	PronType=Neg	9	det	_	_
9	soot	soot	NOUN	NN	Number=Sing	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **mix** | participle |  | Gas *not said here* |  |  |  | with air | vn mix-22.1-1-1 «NP V PP.co-patient»: agent=Patient with air=Co-Patient |
| 2 | **burn** | present | Gas |  |  |  |  | with no soot; cleanly *property* | vn light\_emission-43.1 «NP.location V PP.theme»: agent=Location with soot=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
Pans are too hot for soot

```conllu
# sent_id = question:chemistry:11-the-candle-and-burning:t3:o3:1
# text = Pans are too hot for soot
1	Pans	pan	NOUN	NNS	Number=Plur	4	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	too	too	ADV	RB	_	4	advmod	_	_
4	hot	hot	ADJ	JJ	Degree=Pos	0	root	_	_
5	for	for	ADP	IN	_	6	case	_	_
6	soot	soot	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Pans |  |  |  |  | for soot; hot *property* | tree rules |

### Option 4 {#o4}

<!-- .ven lang=en -->
Candle wax is black inside

```conllu
# sent_id = question:chemistry:11-the-candle-and-burning:t3:o4:1
# text = Candle wax is black inside
1	Candle	candle	NOUN	NN	Number=Sing	2	compound	_	_
2	wax	wax	NOUN	NN	Number=Sing	4	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
4	black	black	ADJ	JJ	Degree=Pos	0	root	_	_
5	inside	inside	ADV	RB	_	4	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Candle wax |  |  |  |  | black, inside *property* | 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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- ← previous: [The candle and what burning is, test 2](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/11-the-candle-and-burning/t2/)
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