---
title: You blow very gently on a candle and it burns brighter. How is that… — Wind and weather · tree and pragmatics
description: You blow very gently on a candle and it burns brighter. How is that possible? Test 9 · ★ of lesson 15 «Wind and weather» of the physics 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 9 · ★ · Wind and weather

<!-- .ven lang=en -->
You blow very gently on a candle and it burns brighter. How is that possible?

<!-- .vintro -->
**Mova's choice:** option 3 · **The right answer:** option 3 · right ✓ · **Who acts:** You, candle, that · **What happens:** blow, burn, be · **To what, where:** candle

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This is test 9 · ★ of lesson 15 «Wind and weather» of the physics 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/physics/15-wind-and-weather/#t9).

## The question {#question}

<!-- .note -->
*Sentence 1:* You blow very gently on a candle and it burns brighter.

```conllu
# sent_id = question:physics:15-wind-and-weather:t9:1
# text = You blow very gently on a candle and it burns brighter.
1	You	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	2	nsubj	_	_
2	blow	blow	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	0	root	_	_
3	very	very	ADV	RB	_	4	advmod	_	_
4	gently	gently	ADV	RB	_	2	advmod	_	_
5	on	on	ADP	IN	_	7	case	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	candle	candle	NOUN	NN	Number=Sing	2	obl	_	_
8	and	and	CCONJ	CC	_	10	cc	_	_
9	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	10	nsubj	_	_
10	burns	burn	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	conj	_	_
11	brighter	bright	ADJ	JJR	Degree=Cmp	10	xcomp	_	SpaceAfter=No
12	.	.	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **blow** | present | You |  |  | a candle |  | gently *property* | vn split-23.2 «NP V apart»: agent=Patient |
| 2 | **burn** | present | candle |  |  |  |  | bright *property* | vn light\_emission-43.1 «NP V»: 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:* How is that possible?

```conllu
# sent_id = question:physics:15-wind-and-weather:t9:2
# text = How is that possible?
1	How	how	ADV	WRB	PronType=Int	4	advmod	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	that	that	PRON	DT	Number=Sing|PronType=Dem	4	nsubj	_	_
4	possible	possible	ADJ	JJ	Degree=Pos	0	root	_	SpaceAfter=No
5	?	?	PUNCT	.	_	4	punct	_	_
```

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

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
It is impossible, so you must be mistaken

```conllu
# sent_id = question:physics:15-wind-and-weather:t9:o1:1
# text = It is impossible, so you must be mistaken
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	expl	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	impossible	impossible	ADJ	JJ	Degree=Pos	0	root	_	SpaceAfter=No
4	,	,	PUNCT	,	_	9	punct	_	_
5	so	so	ADV	RB	_	9	advmod	_	_
6	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	9	nsubj	_	_
7	must	must	AUX	MD	VerbForm=Fin	9	aux	_	_
8	be	be	AUX	VB	VerbForm=Inf	9	aux:pass	_	_
9	mistaken	mistake	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present |  |  |  |  |  | impossible *property* | tree rules |
| 2 | **mistake** | must · passive |  | you |  |  |  |  | tree rules |

### Option 2 {#o2}

<!-- .ven lang=en -->
Gentle blowing makes the wick grow longer and burn more

```conllu
# sent_id = question:physics:15-wind-and-weather:t9:o2:1
# text = Gentle blowing makes the wick grow longer and burn more
1	Gentle	gentle	ADJ	JJ	Degree=Pos	2	amod	_	_
2	blowing	blowing	NOUN	NN	Number=Sing	3	nsubj	_	_
3	makes	make	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	wick	wick	NOUN	NN	Number=Sing	3	obj	_	_
6	grow	grow	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	xcomp	_	_
7	longer	long	ADV	RBR	Degree=Cmp	6	advmod	_	_
8	and	and	CCONJ	CC	_	9	cc	_	_
9	burn	burn	VERB	VB	VerbForm=Inf	6	conj	_	_
10	more	more	ADV	RBR	Degree=Cmp	3	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | Gentle blowing | the wick |  |  |  |  | tree rules |
| 2 | **grow** | present | the wick *not said here* |  |  |  |  | long *property* | vn appear-48.1.1 «NP V»: agent=Theme |
| 3 | **burn** | infinitive | the wick *not said here* |  |  |  |  |  | vn light\_emission-43.1 «NP V»: agent=Theme |

### Option 3 · ← Mova's choice · ✓ the right answer {#o3}

<!-- .ven lang=en -->
A gentle breath brings fresh air to the flame

```conllu
# sent_id = question:physics:15-wind-and-weather:t9:o3:1
# text = A gentle breath brings fresh air to the flame
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	gentle	gentle	ADJ	JJ	Degree=Pos	3	amod	_	_
3	breath	breath	NOUN	NN	Number=Sing	4	nsubj	_	_
4	brings	bring	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	fresh	fresh	ADJ	JJ	Degree=Pos	6	amod	_	_
6	air	air	NOUN	NN	Number=Sing	4	obj	_	_
7	to	to	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	flame	flame	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **bring** | present | a gentle breath | fresh air |  | the flame |  |  | vn bring-11.3-1 «NP V NP PP.destination»: agent=Agent air=Theme to flame=Destination |

### Option 4 {#o4}

<!-- .ven lang=en -->
Your breath contains extra wax

```conllu
# sent_id = question:physics:15-wind-and-weather:t9:o4:1
# text = Your breath contains extra wax
1	Your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	2	nmod:poss	_	_
2	breath	breath	NOUN	NN	Number=Sing	3	nsubj	_	_
3	contains	contain	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	extra	extra	ADJ	JJ	Degree=Pos	5	amod	_	_
5	wax	wax	NOUN	NN	Number=Sing	3	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **contain** | present | Your breath | extra wax |  |  |  |  | vn comprise-107.2-2 «NP V NP»: agent=Pivot wax=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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