---
title: Gran, washing her car after a snowy week: "it's the road salt". Why… — Rust: iron's slow fire · tree and pragmatics
description: Gran, washing her car after a snowy week: "it's the road salt". Why bother? Test 4 of lesson 13 «Rust: iron's slow fire» 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 4 · Rust: iron's slow fire

<!-- .ven lang=en -->
Gran, washing her car after a snowy week: "it's the road salt". Why bother?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** Gran, car · **What happens:** wash, be · **To what, where:** car, road salt · **Speech:** someone speaks here

<!-- .vabout -->
This is test 4 of lesson 13 «Rust: iron's slow fire» 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/13-rust-irons-slow-fire/#t4).

## The question {#question}

<!-- .note -->
*Sentence 1:* Gran, washing her car after a snowy week: "it's the road salt".

```conllu
# sent_id = question:chemistry:13-rust-irons-slow-fire:t4:1
# text = Gran, washing her car after a snowy week: "it's the road salt".
1	Gran	Gran	PROPN	NNP	Number=Sing	3	nsubj	_	SpaceAfter=No
2	,	,	PUNCT	,	_	3	punct	_	_
3	washing	wash	VERB	VBG	Tense=Pres|VerbForm=Part	0	root	_	_
4	her	her	PRON	PRP$	Case=Gen|Gender=Fem|Number=Sing|Person=3|Poss=Yes|PronType=Prs	5	nmod:poss	_	_
5	car	car	NOUN	NN	Number=Sing	3	obj	_	_
6	after	after	ADP	IN	_	9	case	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	9	det	_	_
8	snowy	snowy	ADJ	JJ	Degree=Pos	9	amod	_	_
9	week	week	NOUN	NN	Number=Sing	3	obl	_	SpaceAfter=No
10	:	:	PUNCT	:	_	16	punct	_	_
11	"	"	PUNCT	``	_	16	punct	_	SpaceAfter=No
12	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	16	nsubj	_	SpaceAfter=No
13	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	16	cop	_	_
14	the	the	DET	DT	Definite=Def|PronType=Art	16	det	_	_
15	road	road	NOUN	NN	Number=Sing	16	compound	_	_
16	salt	salt	NOUN	NN	Number=Sing	3	parataxis	_	SpaceAfter=No
17	"	"	PUNCT	''	_	16	punct	_	SpaceAfter=No
18	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **wash** | gerund | Gran | Gran's car |  |  | week |  | tree rules |
| 2 | **is a** *in a quote* | present | car | the road salt |  |  |  |  | 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.

<!-- .note -->
*Sentence 2:* Why bother?

```conllu
# sent_id = question:chemistry:13-rust-irons-slow-fire:t4:2
# text = Why bother?
1	Why	why	ADV	WRB	PronType=Rel	0	root	_	_
2	bother	bother	PRON	DT	Number=Sing|PronType=Dem	1	nsubj	_	SpaceAfter=No
3	?	?	PUNCT	.	_	1	punct	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

## The options {#options}

### Option 1 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
Salt left on the car speeds up rusting

```conllu
# sent_id = question:chemistry:13-rust-irons-slow-fire:t4:o1:1
# text = Salt left on the car speeds up rusting
1	Salt	salt	NOUN	NN	Number=Sing	6	nsubj	_	_
2	left	leave	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	1	acl	_	_
3	on	on	ADP	IN	_	5	case	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	car	car	NOUN	NN	Number=Sing	2	obl	_	_
6	speeds	speed	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
7	up	up	ADP	RP	_	6	compound:prt	_	_
8	rusting	rusting	NOUN	NN	Number=Sing	6	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **leave** | participle |  | Salt *not said here* |  | the car |  |  | vn keep-15.2 «NP V NP PP.location»: agent=Agent on car=Location |
| 2 | **speed up** | present | Salt | rusting |  |  |  |  | vn run-51.3.2-2 «NP V NP»: agent=Agent rusting=Agent |

### Option 2 {#o2}

<!-- .ven lang=en -->
Salt freezes hard and cracks the windows

```conllu
# sent_id = question:chemistry:13-rust-irons-slow-fire:t4:o2:1
# text = Salt freezes hard and cracks the windows
1	Salt	salt	NOUN	NN	Number=Sing	2	nsubj	_	_
2	freezes	freeze	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	hard	hard	ADV	RB	Degree=Pos	2	advmod	_	_
4	and	and	CCONJ	CC	_	5	cc	_	_
5	cracks	crack	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	conj	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	windows	window	NOUN	NNS	Number=Plur	5	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **freeze** | present | Salt |  |  |  |  | hard *property* | vn other\_cos-45.4-1 «NP.patient V»: agent=Patient |
| 2 | **crack** | present | Salt *not said here* | the windows |  |  |  |  | vn sound\_emission-43.2 «PP.location V NP»: agent=Location window=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
Salt makes the paint change colour in the sun

```conllu
# sent_id = question:chemistry:13-rust-irons-slow-fire:t4:o3:1
# text = Salt makes the paint change colour in the sun
1	Salt	salt	NOUN	NN	Number=Sing	2	nsubj	_	_
2	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	paint	paint	NOUN	NN	Number=Sing	2	obj	_	_
5	change	change	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	2	xcomp	_	_
6	colour	colour	NOUN	NN	Number=Sing	5	obj	_	_
7	in	in	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	sun	sun	NOUN	NN	Number=Sing	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | Salt | the paint |  |  |  |  | tree rules |
| 2 | **change** | present | the paint *not said here* | colour |  | the sun |  |  | vn dress-41.1.1-1-1 «NP V NP»: agent=Agent colour=Patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
Salt makes the car slower on the road

```conllu
# sent_id = question:chemistry:13-rust-irons-slow-fire:t4:o4:1
# text = Salt makes the car slower on the road
1	Salt	salt	NOUN	NN	Number=Sing	2	nsubj	_	_
2	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	car	car	NOUN	NN	Number=Sing	2	obj	_	_
5	slower	slow	ADJ	JJR	Degree=Cmp	2	xcomp	_	_
6	on	on	ADP	IN	_	8	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	road	road	NOUN	NN	Number=Sing	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | Salt | the car |  |  |  | slow *property* | vn build-26.1-1 «NP.asset V NP»: agent=Asset car=Product |

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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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