---
title: Paint stops rust by keeping air and water away; once the paint is sc… — Rust: iron's slow fire · tree and pragmatics
description: Paint stops rust by keeping air and water away; once the paint is scratched, rust starts at the scratch and creeps under it. Who acts: Paint, rust. A sentence of the lesson «Rust: iron's slow fire» of the chemistry course of Mova's primary school with its dependency tree and the pragmatics of every 
---

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# Rust: iron's slow fire, sentence 14

<!-- .ven lang=en -->
Paint stops rust by keeping air and water away; once the paint is scratched, rust starts at the scratch and creeps under it.

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**Who acts:** Paint, rust · **What happens:** stop, keep, scratch, start, creep · **To what, where:** rust, air, paint, scratch

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This is a sentence of the lesson «Rust: iron's slow fire» of the chemistry course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (Paint, rust), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:chemistry:013-rust-irons-slow-fire.lesson:14
# text = Paint stops rust by keeping air and water away; once the paint is scratched, rust starts at the scratch and creeps under it.
# source = school lesson (ours)
# course = chemistry
# lesson = 013-rust-irons-slow-fire.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R7-rel-agree ×2
1	Paint	paint	NOUN	NN	Number=Sing	2	nsubj	_	_
2	stops	stop	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	rust	rust	NOUN	NN	Number=Sing	2	obj	_	_
4	by	by	SCONJ	IN	_	5	mark	_	_
5	keeping	keep	VERB	VBG	Tense=Pres|VerbForm=Part	2	advcl	_	_
6	air	air	NOUN	NN	Number=Sing	5	obj	_	_
7	and	and	CCONJ	CC	_	8	cc	_	_
8	water	water	NOUN	NN	Number=Sing	6	conj	_	_
9	away	away	ADV	RB	_	5	advmod	_	_
10	;	;	PUNCT	,	_	18	punct	_	_
11	once	once	SCONJ	IN	_	15	mark	_	_
12	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
13	paint	paint	NOUN	NN	Number=Sing	15	nsubj:pass	_	_
14	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	15	aux:pass	_	_
15	scratched	scratch	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	18	advcl	_	_
16	,	,	PUNCT	,	_	18	punct	_	_
17	rust	rust	NOUN	NN	Number=Sing	18	nsubj	_	_
18	starts	start	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	parataxis	_	Agree=R7-rel-agree|Haiku=2:conj
19	at	at	ADP	IN	_	21	case	_	_
20	the	the	DET	DT	Definite=Def|PronType=Art	21	det	_	_
21	scratch	scratch	NOUN	NN	Number=Sing	18	obl	_	Agree=R7-rel-agree|Haiku=18:nmod
22	and	and	CCONJ	CC	_	23	cc	_	_
23	creeps	creep	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	18	conj	_	_
24	under	under	ADP	IN	_	25	case	_	_
25	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	23	obl	_	_
26	.	.	PUNCT	.	_	2	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **stop** | present | Paint | rust |  |  |  |  | vn stop-55.4-1-1 «NP V NP.eventuality»: agent=Subeventuality rust=Eventuality |
| 2 | **keep** | gerund | Paint *not said here* | air and water |  |  |  | away *property* | vn keep-15.2 «NP V NP»: agent=Agent air=Theme |
| 3 | **scratch** | present · passive |  | the paint |  |  |  |  | vn scribble-25.2-1 «NP V NP»: subject=Theme |
| 4 | **start** | present | rust |  |  | the scratch |  |  | vn begin-55.1-1-1 «NP.eventuality V»: agent=Eventuality |
| 5 | **creep** | present | rust *not said here* |  |  | paint |  |  | vn run-51.3.2 «NP V PP.location»: agent=Theme under it=Trajectory |

<!-- .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.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:chemistry:013-rust-irons-slow-fire.lesson:14`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R7-rel-agree ×2. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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